| 01 | Knollenberg / Lewis / Hays | Jack Lewis Enterprises | | Porsche | 993 Carrera | RSR | Porsche | GTS-3 |
| 03 | Armin Hahne | Ernst Ungar | | URD | WSC96 | | BMW | WSC |
| 04 | Johnson / Schmidt / Kreider | Max Schmidt | Max Schmidt | Porsche | 911 Carrera | RSR | Porsche | GTS-3 |
| 05 | Stitt / Wheeler / Hays / Eisenlohr | Auto Sport South | | Porsche | 993 | | Porsche | GTS-3 |
| 07 | Quester / Duez | | | BMW | M3 | | BMW | GTS-3 |
| 1 | Taylor / Sharp / van de Poele / Pace | Doyle Racing/Riley & Scott (USA) | | Riley & Scott | Mk III | | Oldsmobile | WSC |
| 3 | Evans / Velez / Salazar / Morgan / Morgan | Team Scandia (USA) | Andy Evans | Ferrari | 333 SP | | Ferrari | WSC |
| 4 | Dibos / Pace / Waddell / Taylor | Dibos Racing (PE) | | Riley & Scott | Mk III | | Oldsmobile | WSC |
| 5 | Baldwin / Willingham / Trott / Spenard / White / Urciuoli | Doug Trott (CDN) | | Porsche | 911 | | Porsche | GTS-3 |
| 6 | Hessert / Fergus / Marvin | Prototype Technology Group (USA) | | BMW | M3 | E36 | BMW | GTS-3 |
| 7 | Auberlen / Said / Quiros | Prototype Technology Group | | BMW | M3 | E36 | BMW | GTS-3 |
| 8 | Camferdam / Mandeville / O'Connell / Schubot | Support Net Racing | | Hawk | C-8 | | Chevrolet | WSC |
| 9 | Cottaz / Policand / Alboreto / Bouchut / Pompidou | Courage Competition | | Courage | C41 | | Chevrolet | WSC |
| 16 | Weaver / Leitzinger / Dyson / Wallace / Paul, Jr. / Schneider | Dyson Racing (USA) | | Riley & Scott | Mk III | | Ford | WSC |
| 18 | Lewis / Johnson / Bossineau / Pendagras / Bourassa / Goebel | Rick Fairbanks | | Chevrolet | Camaro | | Chevrolet | GTS-3 |
| 20 | Weaver / Leitzinger / Dyson / Wallace / Paul, Jr. / Forbes-Robinson | Dyson Racing (USA) | | Riley & Scott | Mk III | | Ford | WSC |
| 22 | Coppelli / Agusta | Agusta Racing (GB) | | Callaway | Corvette | LM600 | Chevrolet | GTS-2 |
| 23 | Kyle McIntyre | Kyle McIntyre (USA) | Kyle McIntyre | Chevrolet | Camaro | IV | Chevrolet | GTS-1 |
| 24 | Sanborn / Lyford / Hanauer / Bingham / Kitch | Alex Job Racing (USA) | Alex Job | Porsche | 993 | | Porsche | GTS-3 |
| 26 | Cilli / Lazzaro / Conte / Bretzel | Alex Job Racing (USA) | | Porsche | 993 | | Porsche | GTS-3 |
| 27 | Chiminelli / De Iturbe / Polani / Giarotti / Johnson / Overbagh | Hoyt Overbagh (USA) | Hoyt Overbagh | Chevrolet | Camaro | IV | Chevrolet | GTS-1 |
| 29 | Caffi / Montani / Rosa | Target 24 (I) | Montani Fabio | Riley & Scott | Mk III | | Oldsmobile | WSC |
| 30 | Moretti / Bell / Theys / Hermann | Moretti Racing (I) | | Ferrari | 333 SP | | Ferrari | WSC |
| 32 | Goldin / Goldin / Shuster / Montgomery | Steve Goldin | | Mazda | RX-7 | | Mazda | GTS-3 |
| 33 | Dressler / Mirro / Borkowski / Goldsborough | FAB Factory Motorsport (USA) | Fabian Dressler | Kudzu | DG-2 | WSC | Buick | WSC |
| 34 | Vallancourt / Lasally / Evans / Guthrie | | | Oldsmobile | Cutlass | Supreme | | GTS-1 |
| 36 | Matthews / Haywood / Bundy / Murry | Jim Mathews Racing | | Porsche | 993 | | Porsche | GTS-3 |
| 37 | Casadei / Garbagnati / Ciani / Bucci / Overbagh | Overbagh | Hoyt Overbagh | Chevrolet | Camaro | IV | Chevrolet | GTS-1 |
| 38 | Hein / Green / Loebel / Schroeder / Blackman | Mark Hein | | Acura | NSX | | Acura | GTS-3 |
| 40 | Calvet / Tanner / Kuttner | Oliver Kuttner | | Lotus | Esprit | | | GTS-3 |
| 41 | Cervelli / Basakinci / Busby | Team Technodyne | | Porsche | 993 Carrera | RSR | Porsche | GTS-3 |
| 42 | Freeman / Gregg | Jarett Freeman | | Porsche | 993 | | Porsche | GTS-3 |
| 44 | Creger / Stewart | Brad Creger | | Mazda | RX-7 | | Mazda | GTS-3 |
| 45 | Davies / Goodyear / Jones / Root | Davies Motorsports (USA) | Ed Davies | Porsche | 993 Turbo | | Porsche | GTS-1 |
| 47 | Safina / Reisman / Smith / Kohler | T-F Racing | | Saleen | Mustang | | Ford | GTS-2 |
| 51 | Trenery / van Schoote / Bryant | Fantasy Junction | | Chevrolet | Monte Carlo | | Chevrolet | GTS-1 |
| 54 | Trott / Spenard / Ruther / White | Doug Trott (CDN) | | Porsche | 993 Cup | 3.8 RSR | Porsche | GTS-3 |
| 56 | Snow / Kitchak / Lintott / Ollila | Martin Snow (USA) | Martin Snow | Porsche | 993 GT2 | | Porsche | GTS-3 |
| 57 | Kryder / Green | Kryderacing (USA) | | Nissan | 240SX | | Nissan | GTS-3 |
| 60 | Kopf / Goldstein / Quintanilla | Kopf Precision Race Products Team (USA) | | Keiler | KII | | Ford | WSC |
| 62 | Scheuren / Jones / Hitt / Green | Diablo Racing (USA) | Tom Scheuren | Chevrolet | Camaro | III | Chevrolet | GTS-1 |
| 63 | Downing / McAdam / Terada / Grupp / Fréon | Downing/Atlanta Racing (USA) | | Kudzu | DLM | | Mazda | WSC |
| 64 | Butt / Higgs / McTureous / King | Mel A. Butt (USA) | Mel Butt | Chevrolet | Camaro | III | Chevrolet | GTS-1 |
| 65 | Saleen / Cobb / Rizzo / Warnock / Andrews / Schirle | | | Saleen | Mustang | | Ford | GTS-2 |
| 67 | Purner / Slater / Lingner / Groff | Alex Job Racing (USA) | Alex Job | Porsche | 964 Carrera | RSR 3.8 | Porsche | GTS-3 |
| 68 | Buckler / Nearburg / Rees / McGlynn | The Racers Group (USA) | Kevin Buckler | Porsche | 993 | | Porsche | GTS-3 |
| 69 | Ralston / Gamroth / Trejos / Aase | Jorge Trejos | | Porsche | 993 | | Porsche | GTS-3 |
| 71 | Said / Bertaggia / Unser / Lässig | Johnny Unser | | Callaway | C7-R | | Chevrolet | GTS-1 |
| 74 | Stuck / Adam | Champion Porsche (USA) | Dave Maraj | Porsche | 993 GT2 | Evo | Porsche | GTS-1 |
| 75 | Robinson / Hoerr / Baldwin / Sifton | Robinson Racing (USA) | | Oldsmobile | Aurora | | | GTS-1 |
| 76 | Collins / Wagner / Brown / Doolin | Team A.R.E. (USA) | Richard Raimist | Porsche | 993 Carrera | RSR | Porsche | GTS-3 |
| 77 | Banks / Cattaneo / Boidron / Julien | Tim Banks | | Oldsmobile | Cutlass | Supreme | | GTS-1 |
| 78 | Gray / Velasquez / Anderson / Raimist / Wagner / Collins | Team A.R.E. (USA) | Richard Raimist | Porsche | 964 Carrera | RSR | Porsche | GTS-3 |
| 86 | Marshall / Urciuoli / Marshall / Scrogham | G & W Motorsports | | Porsche | 993 Cup | | Porsche | GTS-3 |
| 89 | Dittmer / Dittmer / Grant / Gagliardo | Tag Racing | | Porsche | 993 | | Porsche | GTS-3 |
| 90 | Delano / Petery / Carter | Road Circuit Technology | | Oldsmobile | Cutlass | Supreme | | GTS-1 |
| 91 | Schramm / Hayner / Heinricy / Miller | Rock Valley Oil & Chemical Co. | | Chevrolet | Camaro | | Chevrolet | GTS-1 |
| 95 | Volk / Bell / Buhl | TRV Motorsports | | Kudzu | DL-4 | | Chevrolet | WSC |
| 97 | Dupuy / Beretta / Hanneman | Viper Team Oreca (F) | Hugues de Chaunac | Chrysler | Viper | GTS-R | Dodge | GTS-1 |