| 0 | Porsche 911 | Tony Singer | | | | | - | rear |
| 00 | X-250 Ferrari | John Christie | white/green (+yellow) | | Pirelli | | open | mid |
| 01 | Porsche 911 GT2 Evo | Rohr Corp. | white/blue | ROHR | Pirelli | Mobil 1 | closed | rear |
| 03 | Porsche 911 GT2 | Roock Racing | black | MIRACHEM | Michelin | | closed | rear |
| 05 | Porsche 911 | Auto Sport South | green | AUTO SPORT SOUTH | | | closed | rear |
| 06 | Porsche 944 Turbo | Jeremiah Kelly | | | | | closed | front |
| 09 | Pontiac Grand Prix | Rice Racing | blue/yellow | Häagen-Dazs/REBELLO/INTERNATIONAL TRUCKS/STACY SUSPENSION SYSTEMS | Goodyear | | closed | front |
| 1 | Riley & Scott Mk III Oldsmobile | Doyle Racing/Riley & Scott | red/white/blue (+yellow) | DANKA/TOSHIBA | Pirelli | Red Line Oil | open | mid |
| 2 | Riley & Scott Mk III Ford | Screaming Eagles Racing | blue/black (+gold) | YOKOHAMA/OMP | | | open | mid |
| 3 | Ferrari 333 SP | Team Scandia | red | ALTA/ROYAL PURPLE | Goodyear | | open | mid |
| 4 | Riley & Scott Mk III Oldsmobile | Dibos Racing | red/white/blue (+yellow) | FAUCETT/américa | Pirelli | Red Line Oil | open | mid |
| 6 | BMW M3 | Prototype Technology Group | white/dark blue (+light blue/red) | Valvoline | Yokohama | Valvoline | closed | front |
| 7 | BMW M3 | Prototype Technology Group | white (+red/yellow) | Red Bull/FINA | Yokohama | | closed | front |
| 8 | Hawk C-8 Chevrolet | Support Net Racing | white/blue (+purple) | SUPPORT NET | Yokohama | | open | mid |
| 10 | BMW M3 | Prototype Technology Group | green/white | FIRST UNION/Valvoline | Yokohama | Valvoline | closed | front |
| 11 | Oldsmobile Aurora | Robinson Racing | white/blue/red | HOT WHEELS | Goodyear | | closed | front |
| 16 | Riley & Scott Mk III Ford | Dyson Racing | white/dark blue (+yellow/red) | rain-X/DYSON Racing | Goodyear | | open | mid |
| 17 | Porsche 911 GT2 Evo | Art Pilla | | | | | closed | rear |
| 20 | Riley & Scott Mk III Ford | Dyson Racing | white/dark blue (+yellow/red) | rain-X/DYSON Racing | Goodyear | | open | mid |
| 22 | Chevrolet Camaro | Resiman Racing | blue | RPI/Reisman Property Interests, Inc. | | | closed | front |
| 25 | Porsche 964 Carrera RSR | Alex Job Racing | white (+yellow) | Worldwide Notification Systems, Inc./HENDRICK IMPORTS | | | closed | rear |
| 26 | Porsche 911 | Alex Job Racing | red (+yellow) | PORSCHE/ALEX JOB Racing | Yokohama | | closed | rear |
| 27 | Porsche 911 | Tim Vargo | black/orange | SUPERFLO | Pirelli | Superflo | closed | rear |
| 28 | Spice SC95 Oldsmobile | FAB Factory Motorsport | white/blue (+red) | orion PACKAGING | Goodyear | | open | mid |
| 30 | Ferrari 333 SP | Moretti Racing | red (+yellow) | momo/Playpiso | Yokohama | | open | mid |
| 31 | Chevrolet Corvette | Kim Baker | | | | | - | front |
| 33 | Kudzu DG-2 Buick | FAB Factory Motorsport | red | FAB FACTORY MOTORSPORT | | | open | mid |
| 34 | Porsche 968 | James Loftis | silver | PORSCHE/GTR MOTORSPORTS | Dunlop | | closed | front |
| 35 | Chevrolet Camaro IV | Richard McDill | white | Hamilton | Yokohama | | closed | front |
| 36 | Pontiac Firebird | Phoenix American Motorsports | | | | | closed | front |
| 37 | Chevrolet Camaro | Hoyt Overbagh | white/red | GOODYEAR | Goodyear | | closed | front |
| 38 | Acura NSX | Mark Hein | red | duPont REGISTRY | Yokohama | | closed | mid |
| 39 | Porsche 911 | Jim Mathews Racing | white (+green/red/yellow/blue) | CAROLINA | | | closed | rear |
| 42 | Porsche 911 | Jarett Freeman | white (+blue) | triscuit/TECHNICAL DIMENSIONS | | | closed | rear |
| 43 | Ferrari 333 SP | Team Scandia | red | ACXIOM/ALTA | Goodyear | | open | mid |
| 45 | Porsche 911 Turbo | Davies Motorsports | white/yellow | | | | closed | rear |
| 47 | Ford Saleen Mustang | T-F Racing | blue/white (+yellow/orange) | zippo | | Kendall | closed | front |
| 48 | Chevrolet Camaro | Ted Kempgens | white | BPS/ASSOCIATED TRAVEL SERVICES | Goodyear | | closed | front |
| 50 | Porsche 911 | Jorge Trejos | red (+blue/white) | COSTA RICA/Castrol/alcon | Pirelli | Castrol | closed | rear |
| 52 | Porsche 964 Carrera RSR 3.8 | Stadler Motorsport | yellow | hasseröder | Pirelli | | closed | rear |
| 53 | Porsche 964 Carrera RSR 3.8 | Stadler Motorsport | white (+blue) | | Pirelli | | closed | rear |
| 55 | Ford Saleen Mustang | Saleen Allen Speedlab | white/black/yellow | HOME IMPROVEMENT/BASF | Goodyear | Shell | closed | front |
| 56 | Porsche 911 GT2 | Martin Snow | white (+black/yellow/red) | | | | closed | rear |
| 57 | Nissan 240SX | Kryderacing | yellow | NISSAN/Irace | Goodyear | | closed | front |
| 58 | Porsche 911 | Protechnik Racing | white/red (+black/yellow) | Pro TECHNIK | Goodyear | | closed | rear |
| 60 | Keiler KII Ford | Kopf Precision Race Products Team | silver (+blue/orange/black) | TRANSPORTS QUINTANILLA, S.A., C.V. | Goodyear | | open | mid |
| 61 | Porsche 911 GT2 | Konrad Motorsport | white/turquoise | CUPIDO CIGARS/Lufthansa Cargo | Pirelli | | closed | rear |
| 63 | Kudzu DLM Mazda | Downing/Atlanta Racing | white (+orange) | mazda/TRENCH SHORING SERVICES | Goodyear | | open | mid |
| 65 | Ford Saleen Mustang | Saleen Allen Speedlab | white/black/yellow | HOME IMPROVEMENT/BASF | | Shell | closed | front |
| 66 | Panoz GTR-1 Ford | Panoz Motorsport | white (+red/blue/green) | elf/DAMS | Michelin | elf | closed | front |
| 68 | Porsche 911 | The Racers Group | blue/violet (+purple) | TOGO'S/THE RACER'S GROUP | | | closed | rear |
| 69 | Porsche 911 | Jorge Trejos | | | | | closed | rear |
| 70 | Porsche 911 | Newfield/Kartman | white (+purple/orange/yellow/green/blue) | | Pirelli | | closed | rear |
| 72 | Chevrolet Corvette C4 | Tim Banks | yellow | A GENERAL KINETICS/Auto Plus/GPC | | | closed | front |
| 74 | Porsche 911 GT2 Evo | Champion Porsche | white (+red/blue/green/yellow) | STP/Champion | Pirelli | | closed | rear |
| 75 | Oldsmobile Aurora | Robinson Racing | white/yellow (+dark blue) | Hot WHEELS | Goodyear | | closed | front |
| 76 | Porsche 993 Carrera RSR | Team A.R.E. | white/blue/red (+yellow) | YOKOHAMA | Yokohama | | closed | rear |
| 78 | Porsche 964 Carrera RSR | Team A.R.E. | white/blue/red (+yellow) | YOKOHAMA | Yokohama | | closed | rear |
| 80 | Oldsmobile Cutlass Supreme | Dave Perelle | black | INVESTOR RIGHTS ASSOCIATION | Goodyear | | closed | front |
| 86 | Porsche 993 Carrera Cup | G & W Motorsports | white | FIRST UNION/FIKSE | Dunlop | | closed | rear |
| 88 | Riley & Scott Mk III Chevrolet | MSI Racing | black/red (+yellow) | WINCHESTER | Goodyear | | open | mid |
| 89 | Porsche 911 | Tag Racing | red | | | | closed | rear |
| 90 | Oldsmobile Cutlass Supreme | Road Circuit Technology | white (+red/green) | | Goodyear | | closed | front |
| 92 | Mazda RX-7 | PAR International, Ltd. | white | mazda | Goodyear | STP | closed | front |
| 93 | Nissan 240SX | Ecuador Mobil | blue/red/yellow | Mobil 1/saeta/NISSAN | Yokohama | Mobil 1 | closed | front |
| 98 | Porsche 911 | Tag Racing | | | | | closed | rear |
| 99 | Porsche 993 Carrera Cup | Schumacher Racing | white/violet | PIRELLI | Pirelli | | closed | rear |