| 00 | Ferrari 333 SP | Autosport Racing | yellow | Plastic Zeta/Pirelli/Robb Report | Pirelli | | open | mid |
| 01 | Porsche 911 Carrera RSR | Greycliff Racing | red (+yellow) | PORSCHE | | | closed | rear |
| 02 | Porsche 911 Carrera RSR | Reiser/Callas Rennsport | white (+red/blue) | Reiser Callas/METAMOR/VULCAN/Leroy's | | Castrol | closed | rear |
| 03 | Dodge Viper GTS-R | NP Racing | white/blue (+green) | Nicor/DODGE | Dunlop | | closed | front |
| 04 | Porsche 993 Carrera RSR | Schmidt Motorsports | black (+yellow) | ON THE EDGE Performance | | | closed | rear |
| 07 | Porsche 911 GT2 Evo | G&W Motorsports | white (+coloured) | the.jenniferfund.com | Pirelli | | closed | rear |
| 08 | Porsche 911 GT2 | G&W Motorsports | white (+blue/red/yellow/green) | PK SPORT | Dunlop | | closed | rear |
| 09 | Mitsubishi Eclipse | Spirit of Daytona | white (+orange/turquoise) | DAYTONA MITSUBISHI/budget | tOYOTA | Toyo | closed | - |
| 2 | Chevrolet Corvette C5-R | Corvette Racing | silver/black | Goodwrench/GMAC | Goodyear | Mobil 1 | closed | front |
| 3 | Riley & Scott Mk III Ford | DLW Racing Inc. | white | SCOTT SMITH/HARLEY DAVIDSON | Goodyear | | open | mid |
| 4 | Chevrolet Corvette C5-R | Corvette Racing | silver/black | Goodwrench/GMAC | Goodyear | Mobil 1 | closed | front |
| 6 | BMW M3 | Prototype Technology Group | white/black/red | YOKOHAMA/BMW Financial Services | Yokohama | | closed | front |
| 7 | Ferrari 333 SP | Doyle-Risi Racing | red/green/white | TOSHIBA/DANKA/Olive Garden | Pirelli | | open | mid |
| 8 | Riley & Scott Mk III Ford | Transatlantic Racing | yellow/violet/blue/black | SUPPORTNET | Goodyear | | open | mid |
| 10 | BMW M3 | Prototype Technology Group | white/black/red | YOKOHAMA/BMW Financial Services | Yokohama | 76 | closed | front |
| 12 | Hawk MD3R Chevrolet | Genesis Racing | silver (+red) | CHEVROLET/Paintball/NATIONAL PAINTBALL | Goodyear | | open | mid |
| 13 | Chevrolet Camaro | DM Motorsports | silver | | | | closed | front |
| 15 | Riley & Scott Mk III Ford | Hybrid Racing | silver (+red/black) | PlayStation/IGOL/TRACK AIR | Yokohama | | open | mid |
| 16 | Riley & Scott Mk III Ford | Dyson Racing Team, Inc. | blue/white (+red) | GOODYEAR | Goodyear | | open | mid |
| 17 | BMW M3 | T. C. Kline Racing | white | ASPEN KNOLLS | Yokohama | | closed | front |
| 18 | Porsche 911 Carrera RSR | Millennium Motorsports | red (+yellow) | JRZ | Yokohama | | closed | rear |
| 19 | Ford Mustang Cobra | SK Group Motorsports | black (+silver/red) | | | Red Line Oil | closed | front |
| 20 | Riley & Scott Mk III Ford | Dyson Racing Team, Inc. | blue/white/red | GOODYEAR | Goodyear | | open | mid |
| 21 | Porsche 911 GT2 | Haberthur Racing | black (+red) | Brumos Porsche | Dunlop | | closed | rear |
| 22 | Porsche 993 Carrera RSR | Alex Job Racing | white (+blue/red) | AEROFAB | Yokohama | | closed | rear |
| 23 | Porsche 993 Carrera RSR | Alex Job Racing | white (+blue/red) | AEROFAB | Yokohama | | closed | rear |
| 24 | Ferrari 348 | Michael Jacobs | yellow | DURA/Chicago Truck Center, Inc. | Pirelli | | - | mid |
| 25 | Porsche 993 Carrera RSR | RWS-Brun Motorsport | blue | KTM | Michelin | | closed | rear |
| 27 | Mazda RX-7 | Goldin Brothers Racing | silver (+red) | mazda/SAS RACING/Hoosier | Hoosier | | closed | front |
| 28 | Lola B98/10 Ford | Intersport Wheel Works | blue/red (+white) | Banana Joe's | Goodyear | | open | mid |
| 29 | Riley & Scott Mk III Ford | Intersport Wheel Works | blue/red (+white) | Banana Joe's/orion | Goodyear | | open | mid |
| 31 | Porsche 993 GT2 | Haberthur Racing | | | | | closed | rear |
| 32 | Lola B98/10 Lotus | Konrad Motorsport | yellow/green (+blue) | GIESSE | Dunlop | | open | mid |
| 33 | Porsche 911 GT2 | Konrad Motorsport | white/turquoise | KONRAD/GSG | Dunlop | | closed | rear |
| 36 | Ferrari 333 SP | Matthews Racing | red (+blue/yellow/black) | momo/CAROLINA | Michelin | | open | mid |
| 39 | Porsche 911 Carrera RSR | Pumpelly/Mitchum Motorsports | black | NAMG | Goodyear | 76 | closed | rear |
| 40 | Chevrolet Camaro | Rankin Racing | white | COLONIAL BANK/Hella/FARM BUREAU/PIE | Hoosier | | closed | front |
| 42 | Ferrari F355 | Supertech S. B. Racing | black | Shell/Ferrari of Central Florida | Pirelli | Shell | closed | mid |
| 44 | Chevrolet Corvette | Specter Werks Sports | red (+black/white) | Jack Cauley | Hoosier | Mobil 1 | closed | front |
| 45 | BMW M3 | Bell Motorsports | white/black/red | YOKOHAMA | Yokohama | | closed | front |
| 47 | Spice SE90 Chevrolet | RaceStar Motorsports | blue | RACESTAR/FLO-TEC | Goodyear | | open | mid |
| 48 | Porsche 911 GT2 | Freisinger Motorsport | white | TSW ALLOY WHEEL | Pirelli | Castrol | closed | rear |
| 49 | Porsche 911 GT2 | Freisinger Motorsport | white | TONDACH/FREISINGER | Pirelli | Castrol | closed | rear |
| 50 | Dodge Viper GTS-R | Viper Team Oreca | white/blue (+red) | Mobil 1 | Michelin | Mobil 1 | closed | front |
| 52 | Acura NSX-R | Easton Properties Corp. | red | ACURA/PIAA | Pirelli | | closed | mid |
| 53 | Chevrolet Camaro | Diablo Racing | white (+red) | Grotto Pizza/DIABLO | Goodyear | | closed | front |
| 54 | BMW M3 | Bell Motorsports | white/black/red | YOKOHAMA | Yokohama | | closed | front |
| 55 | Porsche 911 GT2 | Proton Competition | black/red (+yellow) | NOTTER/PROTON | Dunlop | | closed | rear |
| 56 | Porsche 993 Carrera RSR | Manthey Racing | black | Galladé | Pirelli | | closed | rear |
| 57 | Nissan 240SX | Kryderacing | yellow | NISSAN | Goodyear | | closed | front |
| 58 | Porsche 993 Carrera RSR | Petersen Racing | yellow/blue/red | WESTWARD HO/MPIE/Northstar/Wilier | Yokohama | | closed | rear |
| 60 | Keiler KII Ford | Kopf Precision Race Products | blue/orange | Mastercam/KEILER | Goodyear | | open | mid |
| 62 | Kudzu DLM Mazda | Downing/Atlanta, Inc. | blue/white (+orange) | mazda/starlight | Goodyear | | open | mid |
| 63 | Kudzu DLY Mazda | Downing/Atlanta, Inc. | blue/white (+green) | NEC/mazda | Goodyear | | open | mid |
| 66 | Porsche 993 Supercup | M.A.C. Racing | white | FACI EUROPE/I.B.A./FLORA/P V S | | | closed | rear |
| 67 | Porsche 911 Carrera RSR | The Racers Group | | | | | closed | rear |
| 68 | Porsche 911 Carrera RSR | The Racers Group | blue/violet (+purple) | RACER'S GROUP | Goodyear | | closed | rear |
| 69 | Porsche 993 Carrera RSR | Perspective Racing | white (+blue/red) | Expovit/PERSPECTIVE | Pirelli | | closed | rear |
| 70 | Marcos LM600 | Marcos Racing | red/green/blue (+yellow) | EUROTECH | Dunlop | Valvoline | closed | front |
| 72 | Ferrari 333 SP | Doran Racing | red (+blue) | LISTA/momo | Michelin | | open | mid |
| 73 | Porsche 911 Carrera RSR | Jack Lewis Enterprises/Autosport South | white | AUTO SPORT SOUTH/SQJ/PORSCHE | Goodyear | | closed | rear |
| 74 | Riley & Scott Mk III Chevrolet | Robinson Racing | red/blue (+white) | 74 RANCH RESORT | Goodyear | | open | mid |
| 75 | Mazda RX-7 Turbo | Pettit Racing | white | mazda/X-1R/PETTIT RACING | Hoosier | Valvoline | closed | front |
| 76 | Porsche 993 Carrera RSR | Team A.R.E. | white/blue/red (+yellow) | SSF | Yokohama | Motul | closed | rear |
| 77 | Porsche 911 GT2 | Seikel Motorsport | silver (+blue/red) | Brumos Porsche | Dunlop | Castrol | closed | rear |
| 78 | Norma M14 Buick | SBF Racing | silver/yellow (+white) | | | | open | mid |
| 79 | Chevrolet Camaro | Maugeri Motorsports | white/black (+yellow) | SAENZ | Goodyear | | closed | front |
| 81 | Dodge Viper GTS-R | Chamberlain Engineering | dark blue (+white) | iMarket, Inc. | Dunlop | Mobil 1 | closed | front |
| 82 | Porsche 911 GT2 | Roock Racing | silver (+blue) | auto motor und sport/NAVISION/ROOCK PORSCHE | Yokohama | | closed | rear |
| 83 | Porsche 911 GT2 | Roock Racing | silver (+blue) | auto motor und sport/NAVISION/ROOCK PORSCHE | Yokohama | | closed | rear |
| 85 | Porsche 993 | Petersen Racing | | | | | closed | rear |
| 87 | Chevrolet Camaro | John Annis | yellow (+black) | zippo/BRICKYARD | | | closed | front |
| 88 | Ferrari 333 SP | Dollahite Racing | yellow | AVE/Ferrari | Pirelli | | open | mid |
| 89 | Porsche 944 Turbo | Broadfoot Racing | red | NovAtel/Gampbells | Dunlop | Shell | closed | front |
| 92 | Porsche 911 Carrera RSR | Reiser/Callas Rennsport | red | birel | | | closed | rear |
| 93 | Nissan 240SX | Saeta Airlines Racing | blue/red/yellow (+green) | saeta/NISSAN | Yokohama | | closed | front |
| 95 | Riley & Scott Mk III Chevrolet | TRV Motorsport | yellow (+black) | SUPREME | Goodyear | | open | mid |
| 96 | Chevrolet Camaro | Entropy Racing | yellow | ENTROPY RACING | Goodyear | | closed | front |
| 99 | Porsche 911 GT2 | Schumacher Racing | white (+violet) | PORSCHE/MICHELIN | Michelin | | closed | rear |