| 0 | Singer / Singer / Singer / White / Varde / Knowles | Tony Singer | | Porsche | 911 | | Porsche | GTS-3 |
| 00 | Graham / *Smith | John Christie (USA) | John Christie | X-250 | WSC | | Ferrari | WSC |
| 01 | Rohr / Pilgrim / Nearn | Rohr Corp. (USA) | Jochen Rohr | Porsche | 993 GT2 | R | Porsche | GTS-1 |
| 03 | Hürtgen / Ligonnet / Brown / Layer | Roock Racing (D) | Fabian Roock | Porsche | 993 GT2 | | Porsche | GTS-2 |
| 05 | Cogbill / Stitt / Bourassa / *Rebeil | Auto Sport South | | Porsche | 993 | | Porsche | GTS-3 |
| 06 | Fienstein / Pobst | Jeremiah Kelly | | Porsche | 944 | Turbo | Porsche | GTS-3 |
| 09 | Rice / Kong / Lewis / Stacy | Rice Racing | | Pontiac | Grand Prix | | Pontiac | GTS-1 |
| 1 | Taylor / van de Poele / Sharp | Doyle Racing/Riley & Scott (USA) | | Riley & Scott | Mk III | | Oldsmobile | WSC |
| 2 | Nelson / Brassfield / Clark / *Nakaya | Screaming Eagles Racing | | Riley & Scott | Mk III | | Ford | WSC |
| 3 | Dalmas / Johansson / Velez / Evans | Team Scandia (USA) | Andy Evans | Ferrari | 333 SP | | Ferrari | WSC |
| 4 | Dibos / Pace / Waddell | Dibos Racing (PE) | | Riley & Scott | Mk III | | Oldsmobile | WSC |
| 6 | Fergus / Marvin / *Said / *Hill | Prototype Technology Group (USA) | | BMW | M3 | E36 | BMW | GTS-3 |
| 7 | Duez / Said / Quester | Prototype Technology Group (USA) | | BMW | M3 | E36 | BMW | GTS-3 |
| 8 | O'Connell / Schubot / Camferdam / Mandeville | Support Net Racing | | Hawk | C-8 | | Chevrolet | WSC |
| 10 | Quiros / Hessert / Auberlen / Hill / *Said | Prototype Technology Group (USA) | | BMW | M3 | E36 | BMW | GTS-3 |
| 11 | Hoerr / Baldwin / Robinson | Robinson Racing | | Oldsmobile | Aurora | | | GTS-1 |
| 16 | Weaver / Wallace / Leitzinger / *Paul, Jr. | Dyson Racing (USA) | | Riley & Scott | Mk III | | Ford | WSC |
| 17 | Pilla / Kimbrough / Kicak | Art Pilla | | Porsche | 993 GT2 | Evo | Porsche | GTS-1 |
| 20 | Forbes-Robinson / Schneider / Paul, Jr. | Dyson Racing (USA) | | Riley & Scott | Mk III | | Ford | WSC |
| 22 | Reisman / Reisman / Valentine / *Sachs / *Lewis | Resiman Racing | | Chevrolet | Camaro | | Chevrolet | GTS-3 |
| 25 | Slater / Purner / Lingner / Groff | Alex Job Racing (USA) | Alex Job | Porsche | 964 Carrera | RSR 3.8 | Porsche | GTS-3 |
| 26 | Lazzaro / Cilli / Bretzel / *Conte | Alex Job Racing (USA) | | Porsche | 993 | | Porsche | GTS-3 |
| 27 | Refenning / Refenning / Uria | Tim Vargo | | Porsche | 911 | | Porsche | GTS-3 |
| 28 | Field / Gac / Mucha / Smith / Trinkler | FAB Factory Motorsport (USA) | | Spice | SC95 | | Oldsmobile | WSC |
| 30 | Moretti / Hermann / Theys / Montermini | Moretti Racing (I) | | Ferrari | 333 SP | | Ferrari | WSC |
| 31 | Heinricy / Jones / Baker | Kim Baker | | Chevrolet | Corvette | | Chevrolet | GTS-2 |
| 33 | Thomas / Mirro / Ferguson | FAB Factory Motorsport (USA) | Fabian Dressler | Kudzu | DG-2 | WSC | Buick | WSC |
| 34 | Loftis / Howe / *Goldrich / *White | James Loftis | | Porsche | 968 | | Porsche | GTS-3 |
| 35 | McDill / McDill / Juckette / Biava | Richard McDill (USA) | Richard McDill | Chevrolet | Camaro | IV | Chevrolet | GTS-1 |
| 36 | Michaelian / McNeely / Hayner / Heinricy / Weinberg / Aquilante / Miller | Phoenix American Motorsports | | Pontiac | Firebird | | Pontiac | GTS-3 |
| 37 | Casadei / Rovelli / Brickell / Montgomery / Johnson / *Overbagh | Hoyt Overbagh | Hoyt Overbagh | Chevrolet | Camaro | | Chevrolet | GTS-1 |
| 38 | Schroeder / Cunningham / Green / *Hein / *Loebel | Mark Hein | | Acura | NSX | | Acura | GTS-3 |
| 39 | Murry / Matthews / Haywood | Jim Mathews Racing | | Porsche | 993 | | Porsche | GTS-3 |
| 42 | Duffy / Gregg / *Freeman | Jarett Freeman | | Porsche | 993 | | Porsche | GTS-3 |
| 43 | Morgan / Morgan / *Velez / *Evans | Team Scandia | | Ferrari | 333 SP | | Ferrari | WSC |
| 45 | Goodyear / Jochamowitz / Davies | Davies Motorsports (USA) | Ed Davies | Porsche | 993 Turbo | | Porsche | GTS-1 |
| 47 | Turner / Smith / Safina / Kohler / Longhi | T-F Racing | | Saleen | Mustang | | Ford | GTS-2 |
| 48 | Rankin / Scott / Bies / Kempgens | Ted Kempgens (USA) | | Chevrolet | Camaro | IV | Chevrolet | GTS-1 |
| 50 | Varde / Trejos / Aase | Jorge Trejos | | Porsche | 993 | | Porsche | GTS-3 |
| 52 | Calderari / Bryner / Richter | Stadler Motorsport (CH) | Mathias Stadler | Porsche | 964 Carrera | RSR 3.8 | Porsche | GTS-3 |
| 53 | Lay / Wlazik / Sick | Stadler Motorsport (CH) | | Porsche | 964 Carrera | RSR 3.8 | Porsche | GTS-3 |
| 55 | Cobb / Andrews / *Rizzo | Saleen Allen Speedlab (USA) | | Saleen | Mustang | | Ford | GTS-2 |
| 56 | Snow / Kitchak / Collin | Martin Snow (USA) | Martin Snow | Porsche | 993 GT2 | | Porsche | GTS-2 |
| 57 | Sereix / Kryder / Del Vecchio / DeFontes | Kryderacing (USA) | | Nissan | 240SX | | Nissan | GTS-3 |
| 58 | Shalala / Annis / Crilly / Peeler / *MacQuillan / *Toennis | Protechnik Racing (USA) | Sam Shalala | Porsche | 993 | | Porsche | GTS-3 |
| 60 | Quintanilla / Ward / *Trinkler / *Kopf | Kopf Precision Race Products Team (USA) | | Keiler | KII | | Ford | WSC |
| 61 | Wollek / Konrad / Rössler | Konrad Motorsport (D) | Franz Konrad | Porsche | 993 GT2 | | Porsche | GTS-2 |
| 63 | Downing / Nearburg / McAdam | Downing/Atlanta Racing (USA) | | Kudzu | DLM | | Mazda | WSC |
| 65 | Saleen / Warnock / Schirle | Saleen Allen Speedlab (USA) | | Saleen | Mustang | | Ford | GTS-2 |
| 66 | Bundy / Bernard / Purner | Panoz Motorsport (USA) | Don Panoz | Panoz | GTR-1 | | Ford | GTS-1 |
| 68 | Buckler / Earle / Pobst | The Racers Group (USA) | Kevin Buckler | Porsche | 993 | | Porsche | GTS-3 |
| 69 | Gamroth / Ralston / Shelton / *Pobst | Jorge Trejos | | Porsche | 993 | | Porsche | GTS-3 |
| 70 | Manfredi / Nadal / Moschous / Zitza / *Cornaz | Newfield/Kartman | | Porsche | 993 | | Porsche | GTS-3 |
| 72 | Banks / Maunoir / Arpin / *Painter | Tim Banks (USA) | | Chevrolet | Corvette C4 | | Chevrolet | GTS-1 |
| 74 | Stuck / Adam | Champion Porsche (USA) | Dave Maraj | Porsche | 993 GT2 | Evo | Porsche | GTS-1 |
| 75 | Sifton / Gooding / Pezza | Robinson Racing (USA) | | Oldsmobile | Aurora | | | GTS-1 |
| 76 | Collins / Wagner / Blackman | Team A.R.E. (USA) | Richard Raimist | Porsche | 993 Carrera | RSR | Porsche | GTS-3 |
| 78 | Doolin / Pelke / Busby / *Collins / *Wagner | Team A.R.E. (USA) | Richard Raimist | Porsche | 964 Carrera | RSR | Porsche | GTS-3 |
| 80 | Northam / Perelle / Smith | Dave Perelle (USA) | David Perelle | Oldsmobile | Cutlass | Supreme | | GTS-1 |
| 86 | Marshall / Marshall / Scrogham | G & W Motorsports | | Porsche | 993 Cup | | Porsche | GTS-3 |
| 88 | Bentley / Jones / Sullivan | MSI Racing | | Riley & Scott | Mk III | | Chevrolet | WSC |
| 89 | Dittmer / Dittmer / Grant / Gagliardo / *Ave | Tag Racing | | Porsche | 993 | | Porsche | GTS-3 |
| 90 | Delano / Petery / Carter | Road Circuit Technology | | Oldsmobile | Cutlass | Supreme | | GTS-1 |
| 92 | Loring / Boissoneau / Goebel / Johnson / *Pettigrew | PAR International, Ltd. | | Mazda | RX-7 | | Mazda | GTS-3 |
| 93 | Taleb / Halsmer / Julian / *Michelet / *Collado | Ecuador Mobil (EC) | Henry Taleb | Nissan | 240SX | | Nissan | GTS-3 |
| 98 | Dittmer / Dittmer / *Grant / *Gagliardo / *Ave | Tag Racing | | Porsche | 993 Carrera | RSR | Porsche | GTS-3 |
| 99 | Schumacher / O'Steen / Pace | Schumacher Racing (USA) | Larry Schumacher | Porsche | 993 Cup | | Porsche | GTS-2 |