| 01 | Tremblay / Snow / Rohr / *Collins | Rohr (USA) | Jochen Rohr | Porsche | 993 GT2 | R | Porsche | GT2 |
| 04 | Morton / Graham / Fellows | C. J. Motorsports (CDN) | John Graham | Porsche | 993 GT2 | R | Porsche | GT2 |
| 07 | Marshall / Marshall / Huisman / Law | G & W Motorsports | | Porsche | 993 | | Porsche | GT3 |
| 1 | Carter / Petery / Amati | Prototype Technology Group (USA) | | BMW | M3 | E36 | BMW | GT3 |
| 2 | Lewis / Rice / Reese | Mosler Automotive | | Mosler | Raptor | | | GT1 |
| 3 | Kinn / *Singletary / *Payvis | Greg Malvasc | | Chevrolet | Camaro | | Chevrolet | GT1 |
| 4 | Wallace / Brabham / *Bundy | Panoz Motorsports (USA) | Don Panoz | Panoz | GTR-1 | | Ford | GT1 |
| 5 | Bernard / Davies / Bundy | Panoz Motorsports (USA) | Don Panoz | Panoz | GTR-1 | | Ford | GT1 |
| 6 | Cunningham / Bentley / Simo | Prototype Technology Group (USA) | | BMW | M3 | E36 | BMW | GT3 |
| 7 | Taylor / van de Poele / Velez | Doyle-Risi Racing (USA) | | Ferrari | 333 SP | | Ferrari | WSC |
| 8 | O'Connell / Camferdam / Schubot | Transatlantic Racing Services (USA) | | Riley & Scott | Mk III | | Ford | WSC |
| 10 | Auberlen / Said | Prototype Technology Group (USA) | | BMW | M3 | E36 | BMW | GT3 |
| 11 | Baldwin / Hoerr / Robinson | Robinson Racing (USA) | | Oldsmobile | Aurora | | Chevrolet | GT1 |
| 12 | Goldsborough / DeFontes / Neuhaus / Fairbanks | Genesis Racing (USA) | Rick Fairbanks | Hawk | MD3R | | Mazda | WSC |
| 15 | Eagle / *Schroeder | Jon Lewis | | Vector | M12 | | Lamborghini | GT2 |
| 16 | Weaver / *Forbes-Robinson / *Leitzinger | Dyson Racing (USA) | | Riley & Scott | Mk III | | Ford | WSC |
| 20 | Schroeder / Leitzinger / Weaver / Forbes-Robinson / *Dyson / *McCarthy | Dyson Racing (USA) | | Riley & Scott | Mk III | | Ford | WSC |
| 23 | Slater / Wagner / Havens / *Kitch | Alex Job Racing (USA) | | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 24 | Refenning / Vargo / Vargo / Refenning | Tim Vargo (USA) | | Porsche | 911 Carrera | RSR | Porsche | GT3 |
| 25 | Slater / Kitch / Cilli / White / Petersen | Alex Job Racing (USA) | | Porsche | 911 Carrera | RSR | Porsche | GT3 |
| 28 | Field / Brickell / Sutherland | Intersport Racing (USA) | | Riley & Scott | Mk III | | Ford | WSC |
| 30 | Theys / Baldi / Moretti | Momo/Doran Racing | | Ferrari | 333 SP | | Ferrari | WSC |
| 32 | Knowles / Michaelian / McNeely / Heinricy / *Hayner | Phoenix Motorsports | | Pontiac | Firebird | | Pontiac | GT3 |
| 33 | McNeely / *Michealian / *Aquilante | Phoenix Motorsports | | Pontiac | Firebird | | Pontiac | GT3 |
| 38 | Hein / Blackman / Green / Halsmer | Mark Hein | | Acura | NSX | | Acura | GT2 |
| 39 | Murry / Haywood / Bell / Matthews | Matthews-Colucci Racing (USA) | | Riley & Scott | Mk III | | Ford | WSC |
| 46 | Schmidt / Bingham | Bill Radar | | Porsche | 911 Carrera | RSR | Porsche | GT3 |
| 54 | de Quesada / Borcheller / Neuman / Varde | Bell Motorsports (USA) | James Bell | BMW | M3 | E36 | BMW | GT3 |
| 55 | Ralston / Collins / Trejos | AASCO Performance | | Porsche | 911 Carrera | RSR | Porsche | GT3 |
| 57 | Sereix / Del Vecchio / *Kryder | Kryderacing (USA) | | Nissan | 240SX | | Nissan | GT3 |
| 58 | Mazzuoccola / Wolkoff / Raccaro / Fillipakis | Al Broadfoot | | Porsche | 944 | Turbo | Porsche | GT2 |
| 59 | Smith / Gregg / DeSoto / Mirro | Intersport Racing (USA) | | Spice | SC95 | | Oldsmobile | WSC |
| 63 | Pace / *Terada / *Downing | Downing Atlanta (USA) | | Kudzu | DLM | | Mazda | WSC |
| 65 | Saleen / Johnson / Archer | Saleen Allen Speedlab (USA) | | Saleen | Mustang | | Ford | GT2 |
| 66 | Ham / Konrad | Konrad Racing (D) | Franz Konrad | Porsche | 993 GT2 | | Porsche | GT2 |
| 67 | Baron / *O'Keefe / *Pelke / *Buckler | The Racers Group (USA) | Kevin Buckler | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 68 | Earle / Collin / Buckler | The Racers Group (USA) | Kevin Buckler | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 69 | Spreng / *Jodexnis / *Mummery | Gustl Spreng | | Porsche | 993 Carrera | Turbo | Porsche | GT2 |
| 71 | Pilla / Kimbrough / Kitchak | Art Pilla | | Porsche | 993 GT2 | Evo | Porsche | GT1 |
| 74 | Boutsen / Wollek / Pilgrim | Champion Motors (USA) | | Porsche | 911 GT1 | Evo | Porsche | GT1 |
| 76 | Ruther / Vargo / Anegelos / Argetsinger | Team A.R.E. (USA) | Richard Raimist | Porsche | 993 Carrera | RSR | Porsche | GT3 |
| 77 | Rössler / Kitchak / Turner | Konrad Motorsport (D) | Franz Konrad | Porsche | 993 GT2 | R | Porsche | GT2 |
| 86 | Law / Pfeffer / *Fitzgerald | First Union | | Porsche | 993 | | Porsche | GT3 |
| 87 | Annis / Hill / Pobst / Robinson | John Annis | | Chevrolet | Camaro | | Chevrolet | GT1 |
| 91 | Heinricy / Hayner / Schramm | Rock Valley Racing | | Chevrolet | Camaro | | Chevrolet | GT1 |
| 93 | Taleb / Mastronardi / *Loring / *Wilson | Team Ecuador (EC) | Henry Taleb | Nissan | 240SX | | Nissan | GT3 |
| 95 | Schroeder / Volk / St. James | TRV Motorsport | | Kudzu | DL-4 | | Chevrolet | WSC |
| 96 | Wheeler / Davies / Zitza | Olive Garden Racing | | Porsche | 993 | | Porsche | GT3 |
| 99 | Nearn / O'Steen / Schumacher | Larry Schumacher (USA) | Larry Schumacher | Porsche | 993 GT2 | | Porsche | GT2 |