| 0 | Porsche 911 GT1 Evo | Bytzek Motorsport | silver (+black) | Tesma/Litens | Dunlop | 76 | closed | rear |
| 0T | Porsche 911 GT1 Evo | Bytzek Motorsport | white | Tesma/Litens | Dunlop | | closed | rear |
| 01 | Porsche 911 GT1 Evo | Bytzek Motorsport | silver | Tesma/Litens | Dunlop | | closed | rear |
| 02 | Mosler MT900R | Morrison/Mosler Racing | silver | MORRISON MOSLER | Dunlop | | closed | mid |
| 03 | Porsche 911 GT2 | Haberthur Racing | white | G. Haberthur | Dunlop | Castrol | closed | rear |
| 05 | Porsche 996 GT3-R | Haberthur Racing | white (+orange/black/green) | surfin' switzerland/www.yoodle.com | Dunlop | | closed | rear |
| 06 | Riley & Scott Mk III Ford | Jacobs Motorsports | yellow | WEBBCOMMUNICATIONS | Goodyear | | open | mid |
| 07 | Porsche 911 GT2 | G&W Motorsports | light blue | AFL | Yokohama | | closed | rear |
| 09 | Chevrolet Camaro | Team X1-R | silver | X1-R | Goodyear | | closed | front |
| 2 | Chevrolet Corvette C5-R | Corvette Racing | yellow | Goodwrench/GMAC/AER | Goodyear | Mobil 1 | closed | front |
| 3 | Chevrolet Corvette C5-R | Corvette Racing | yellow | Goodwrench/GMAC/AER | Goodyear | Mobil 1 | closed | front |
| 4 | Lola B2K/10 Ford | Philip Creighton Motorsports | yellow/blue (+black) | | Goodyear | | open | mid |
| 5 | Saleen S7-R | Rocketsports | black | HomeLink | Goodyear | | closed | mid |
| 6 | Lola B2K/40 Nissan | TRP Racing | black | 100% Real Bacon | Goodyear | | open | mid |
| 7 | Porsche 996 GT3-R | Broadfoot Racing | white | ICER/BROADFOOT | Dunlop | | closed | rear |
| 8 | Lola B2K/10 Ford | Konrad Motorsport | white/turquoise | | Goodyear | | open | mid |
| 9 | BMW M3 E36 | Genesis Racing | white/yellow | YOKOHAMA | Yokohama | | closed | front |
| 10 | BMW M3 E46 | Genesis Racing | white/red | NATIONAL PAINTBALL | Yokohama | | closed | front |
| 11 | Chevrolet Camaro | Hamilton Safe Motorsports | red | HAMILTON SAFE AND SECURITY SYSTEMS | Goodyear | | closed | front |
| 12 | Ferrari 333 SP | Risi Competizione | red (+black) | SEITEL | Goodyear | | open | mid |
| 12T | Ferrari 333 SP | Risi Competizione | yellow | SEITEL | Goodyear | | open | mid |
| 13 | Porsche 911 GT2 | Free Spirit Motorsports | yellow/black | | Dunlop | | closed | rear |
| 14 | Porsche 993 Carrera RSR | Autometrics Motorsports | black | Case It | Dunlop | | closed | rear |
| 15 | Dodge Viper GTS-R | Chamberlain Motorsports | white | RED BULL | Dunlop | Castrol | closed | front |
| 16 | Riley & Scott Mk III Ford | Dyson Racing Team | white/blue | THETFORD/NORCOLD/GOODYEAR | Goodyear | | open | mid |
| 17 | Porsche 996 GT3-R | RWS Motorsports | blue (+yellow/red) | Red Bull/KTM | Dunlop | Castrol | closed | rear |
| 18 | Chevrolet Corvette | Comer Racing | white/black | | Goodyear | | closed | front |
| 20 | Riley & Scott Mk III Ford | Dyson Racing Team | white/blue | THETFORD/NORCOLD/GOODYEAR | Goodyear | | open | mid |
| 21 | Lola B2K/40 Nissan | Archangel Motorsport Services | black/red/white | G EMSTAR | Avon | | open | mid |
| 22 | Lola B2K/40 Nissan | Archangel Motorsport Services | black/red/white | Budweiser/Bud RACING | Avon | | open | mid |
| 23 | Chevrolet Camaro | Gwen Racing | white/red | FedEx | Pirelli | | closed | front |
| 24 | Marcos Mantara LM600 Evo | Marcos Racing International | red/green/blue (+yellow) | Memec/EUROTECH/Roma | Dunlop | RED LINE OIL | closed | front |
| 25 | Marcos Mantara LM600 Evo | Marcos Racing International | red/green/blue | EUROTECH/Majestic/BRECON/Roma | Dunlop | RED LINE OIL | closed | front |
| 26 | Lola B2K/40 Nissan | Northstar Racing | silver | ACEMCO | Avon | | open | mid |
| 27 | Crawford SSC2K Judd | Lista Doran Racing | white/red | LISTA | Yokohama | | open | mid |
| 28 | Riley & Scott Mk III Ford | Intersport Racing | blue/red | Banana Joe's/FANTASY JUNCTION | Goodyear | | open | mid |
| 30 | Ferrari F355 | Mastercar | red/white | BRUMS | Kumho | | closed | mid |
| 31 | Porsche 996 GT3-RS | White Lightning Racing | white/red/yellow | WESTWARD-HO/MPIE | Dunlop | Mobil 1 | closed | rear |
| 32 | Mazda RX-7 | Goldin Bros Racing | black | | Goodyear | | closed | front |
| 34 | Porsche 996 GT3-R | Spencer Pumpelly Racing | white | NAMG | Dunlop | | closed | rear |
| 35 | Porsche 996 GT3-R | Jurgen Alzen Motorsports | white | H&R/RS TUNING | Yokohama | | closed | rear |
| 36 | Porsche 996 GT3-RS | Jurgen Alzen Racing | silver | H&R/RS TUNING/AMS | Yokohama | | closed | rear |
| 37 | Lola B2K/10 Judd | Intersport Racing | blue/red (+silver) | Banana Joe's | Goodyear | | open | mid |
| 38 | Lola B2K/10 Porsche | Champion Racing | white (+red/yellow/green/blue) | Champion | Goodyear | | open | mid |
| 39 | Porsche 996 GT3-R | White Lightning Racing | white/red/yellow | WESTWARD-HO/MPIE | Dunlop | Elf | closed | rear |
| 40 | Porsche 996 GT3-R | Mac Racing | white (+yellow) | RASBANK | Dunlop | | closed | rear |
| 41 | Porsche 996 GT3-RS | Mac Racing | white (+silver) | MAC RACING/AMERICAN EAGLE OUTFITTERS | Dunlop | | closed | rear |
| 42 | Porsche 996 GT3-RS | Orbit | white/yellow/red (+black) | orbit | Dunlop | | closed | rear |
| 43 | Porsche 996 GT3-RS | Orbit | white/silver/red (+black) | HL CAPITAL | Dunlop | | closed | rear |
| 44 | Chevrolet Corvette | Team Amick Motorsports | dark blue/orange | | Goodyear | | closed | front |
| 45 | Lola B98/10 Ford | Jacobs Motorsports | yellow | GAETA/...RGAN AIR | Yokohama | | open | mid |
| 46 | Chevrolet Corvette | ACP Motorsports | dark blue/white (+brown/red) | ADVANCED COMPOSITE PRODUCTS | Hoosier | | closed | front |
| 47 | Porsche 996 GT3-RS | Evil Eye Racing | white | | Dunlop | | closed | rear |
| 48 | Pilbeam MP84 Nissan | Pilbeam Racing America | silver | ASPEN KNOLLS | Avon | | open | mid |
| 49 | Pilbeam MP84 Nissan | Pilbeam Racing America | silver | ASPEN KNOLLS | Avon | | open | mid |
| 50 | Porsche 996 GT3-R | Aasco - Boduck | black | EMC | Yokohama | | closed | rear |
| 52 | BMW M3 | Safina Racing | white/black/red | SIMTEK/M POWER | Yokohama | | closed | front |
| 53 | Chevrolet Camaro IV | Diablo Racing | white | | Goodyear | | closed | front |
| 54 | BMW M3 E46 V8 | JET Motorsports | blue/silver | YOKOHAMA | Yokohama | | closed | front |
| 55 | Ferrari F355 | Club: Yellow Magic | red/yellow | | Yokohama | | closed | mid |
| 56 | Porsche 996 GT3-RS | Seikel Motorsport | black | ROSA & C. | Yokohama | | closed | rear |
| 57 | Porsche 996 GT3-R | Seikel Motorsport | white/black | | Yokohama | | closed | rear |
| 58 | Mazda Miata MX-5 | Team Tambourine | white/blue/red | GLUNE/mazda/Team TAMBOURINE | Goodyear | Castrol | hardtop | - |
| 60 | Porsche 996 GT3-R | PK Sport | yellow | | Dunlop | | closed | rear |
| 62 | Kudzu DLM Mazda | Team Spencer Motorsports | orange/blue/white | CROCOTILE | Goodyear | | open | mid |
| 63 | Kudzu DLY Mazda | Downing Atlanta | white | hans | Goodyear | | open | mid |
| 64 | Porsche 996 GT3 Cup | Dreamcarsonline.com | white | Suncoast Porsche/Reus Audio Systems/DREAMCARSONLINE.COM | Dunlop | | closed | rear |
| 65 | Porsche 996 GT3-R | Cirtek Motorsport | blue | CIRTEK/PORSCHE | Dunlop | | closed | rear |
| 66 | Porsche 996 GT3-R | The Racer's Group | | | Goodyear | | closed | rear |
| 67 | Porsche 996 GT3-R | The Racer's Group | blue | RACER'S GROUP | Goodyear | | closed | rear |
| 68 | Porsche 996 GT3-RS | The Racer's Group | blue (+white/red) | RACER'S GROUP | Yokohama | | closed | rear |
| 69 | Porsche 911 GT2 | Proton Competition | black/red | KSG | Yokohama | Esso | closed | rear |
| 71 | Porsche 996 GT3-R | Freisinger Motorsports | white | TONDACH/FRESINGER | Yokohama | Castrol | closed | rear |
| 72 | Mazda RX-7 | Pettit Racing | white | mazda/MAZDASPEED/FORGELINE | Hoosier | | closed | front |
| 74 | Riley & Scott Mk III Judd | Robinson Racing | orange/blue | 74 RANCH RESORT | Goodyear | | open | mid |
| 75 | Porsche 996 GT3-RS | Gunnar Racing | white (+violet) | NEXTEL/CLASSIC INDUSTRIES, INC./DANA POINT DENTAL | Dunlop | | closed | rear |
| 76 | Porsche 911 GT1 Evo | Gunnar Racing | black | THE HISTORY CHANNEL | Dunlop | | closed | rear |
| 78 | Norma M2000-01 Mader | Sezio Florida Racing Team | blue/white | Café noir | Goodyear | | open | mid |
| 79 | Lola B2K/40 Nissan | Sportscar Racing Team Sweden | white | metro/Oberto | Avon | Castrol | open | mid |
| 80 | Porsche 996 GT3-R | G&W Motorsports | white/yellow | YOKOHAMA/G & W Motorsports | Yokohama | | closed | rear |
| 81 | Porsche 996 GT3-R | G&W Motorsports | white/yellow | | Yokohama | | closed | rear |
| 83 | Riley & Scott Mk III Ford | Bob Akin Motorsports | silver/blue | | Yokohama | | open | mid |
| 86 | Porsche 996 GT3-RS | Freisinger Motorsports | white | YOKOHAMA/FREISINGER/ICER | Yokohama | Castrol | closed | rear |
| 89 | Lola B2K/40 Nissan | Porsche Haus Racing | white/blue | KOLTER | Goodyear | | open | mid |
| 91 | Porsche 911 GT2 | Cirtek Motorsport | silver | Tradition | Dunlop | | closed | rear |
| 92 | Porsche 996 GT3-R | Cirtek Motorsport | silver (+blue) | RIDLEY | Dunlop | Mobil 1 | closed | rear |
| 95 | Riley & Scott Mk III Chevrolet | TRV Motorsports | yellow/black | RACER PARTS | Goodyear | | open | mid |
| 96 | Oldsmobile Cutlass | Tropic Zone Racing | black/red (+yellow) | Dubler/Oldsmobile | Goodyear | | closed | front |
| 114 | Dodge Viper GTS-R | Chamberlain Motorsports | white/blue | uniesse marine/MRW | Dunlop | Castrol | closed | front |