| 0 | Miller / van Cleef / Cottrell / Holt | Chuck Cottrell | Leigh Miller | Kudzu | DG-2 | WSC | Buick | WSC |
| 00 | Konrad / Hermann / Schuster | Konrad Motorsport (D) | | Kremer | K8 | | Porsche | LM WSC |
| 01 | Haywood / Rohr / O'Steen | Rohr Corp (USA) | Jochen Rohr | Porsche | 993 GT2 | R | Porsche | GTS-1 |
| 02 | Schumacher / Pilgrim / Purner | Rohr Corp (USA) | Jochen Rohr | Porsche | 964 Carrera | RSR | Porsche | GTS-2 |
| 06 | Cooper / Maxwell / McDougall | Doug Rippie | | Chevrolet | Corvette | ZR-1 | Chevrolet | GTS-1 |
| 08 | Marshall / Biggs / Scrogham / Marshall | G W Motorwerkes Ltd. | | Porsche | 911 Carrera | RSR | Porsche | GTS-2 |
| 2 | Dale / Cochran / Ekblom / *Schader | Brix Racing (USA) | Harry Brix | Spice | BDG-02 | | Oldsmobile | WSC |
| 3 | Velez / Evans / van de Poele / *Gentilozzi | Scandia Motorsports (USA) | Andy Evans | Ferrari | 333 SP | | Ferrari | WSC |
| 4 | Smith / DeVries / Hoerr / *Brassfield | Brix Racing | | Oldsmobile | Cutlass | Supreme | | GTS-1 |
| 5 | Fish / Dismore / Brassfield / *Hoerr | Brix Racing | | Oldsmobile | Cutlass | Supreme | | GTS-1 |
| 6 | Dickens / Sutherland / Graham | Power Macintosh Racing | | Spice | AK93 | | Oldsmobile | WSC |
| 7 | Bell / Debban / Volk / *Brown | Bobby Brown Motorsports (USA) | | Spice | HC94 | | Chevrolet | WSC |
| 8 | Mandeville / Camferdam | Support Net Racing Inc. | Henry Camferdam, Jr. | Hawk | MD3R | | Mazda | WSC |
| 9 | Wallace / Lammers / Bell / *Shirazi | Auto Toy Store Inc. | Morris Shirazi | Spice | SE90 | | Chevrolet | WSC |
| 10 | Bouchut / Lavaggi / Lässig | Kremer Racing (D) | | Kremer | K8 | | Porsche | LM WSC |
| 11 | Sereix / Urrutia / Watkins | Ken Bupp (USA) | | Ford | Mustang | | Ford | GTS-1 |
| 12 | Paul, Jr. / Quester | Prototype Technology Group (USA) | | BMW | M3 | E36 | BMW | GTS-2 |
| 13 | Halsmer / Donohue | Prototype Technology Group (USA) | | BMW | M3 | E36 | BMW | GTS-2 |
| 16 | Weaver / Dyson / Leitzinger | Dyson Racing (USA) | | Riley & Scott | Mk III | | Ford | WSC |
| 17 | Mendez / Pilla / Miller / White | Art Pilla | | Porsche | 911 Turbo | | Porsche | GTS-1 |
| 18 | Johnson / Lewis / Sheldon | Dan Lewis (USA) | | Mazda | MX-6 | | Mazda | GTS-2 |
| 23 | Hundredmark / Harry / Pfeffer | Bob Hundredmark | | Oldsmobile | Cutlass | Supreme | | GTS-1 |
| 25 | Barkelew / Cilli / Jackson / *Lazzaro | Alex Job Racing (USA) | | Porsche | 993 | | Porsche | GTS-2 |
| 26 | Auberlen / Slater / Cogbill | Alex Job Racing (USA) | Alex Job | Porsche | 993 | | Porsche | GTS-2 |
| 27 | Refenning / Vargo / Peters | Champion Porsche | | Porsche | 993 Carrera | RS | Porsche | GTS-2 |
| 30 | Moretti / Taylor / Theys | Momo (I) | | Ferrari | 333 SP | | Ferrari | WSC |
| 33 | Baldi / Alboreto / van de Poele / *Gentilozzi | Scandia Motorsports | | Ferrari | 333 SP | | Ferrari | WSC |
| 37 | Ferguson / Kuttner / Gac / Carbonell / *Richardson | Pegasus Racing (USA) | | Pegasus | | | BMW | WSC |
| 39 | Bartling / Lader / Khodkar / Brezinka | Rudi Bartling (CDN) | Rudy Bartling | Porsche | 911 | | Porsche | GTS-2 |
| 41 | Sirgany / Moran / Root | Steve Sirgany | Steve Sirgany | Phoenix | | | Alfa Romeo | WSC |
| 42 | Smith / Leavy / Lowenthal / Sereix | Carolina Racing Engines | | Chevrolet | Camaro | | Chevrolet | GTS-1 |
| 44 | Bentley / Nelson / Clark | Screaming Eagles Racing (USA) | | Spice | SE90 | | Lexus | WSC |
| 47 | Morgan / Morgan | Charles Morgan (USA) | | Oldsmobile | Cutlass | Supreme | | GTS-1 |
| 50 | Barbazza / Julian / Sigala | Euromotorsport Racing Inc. | | Ferrari | 333 SP | | Ferrari | WSC |
| 51 | Trenery / Pattinson / Bryant / Norton | Bruce Trenery | Bruce Trenery | Cannibal | | | Chevrolet | WSC |
| 52 | Strasser / Wheeler / DeFranceschi / *Ludwig | Andy Strasser | | Porsche | 911 Carrera | RSR | Porsche | GTS-2 |
| 53 | McDill / McDill / Juckette | Bill McDill | | Chevrolet | Camaro | | Chevrolet | GTS-1 |
| 55 | Aase / Trejos / Snow | Jorge Trejos (CR) | | Porsche | 964 Carrera | RSR | Porsche | GTS-2 |
| 57 | Kryder / Del Vecchio | Kryderacing (USA) | | Nissan | 240SX | | Nissan | GTS-2 |
| 58 | Shalala / Frazier / Matthews / Pastorini | Pro Technik Racing | Sam Shalala | Porsche | 911 | | Porsche | GTS-2 |
| 60 | Ferran / Gregg / Tyler / *Lee | Vito Scavone (USA) | | Porsche | 911 | S | Porsche | GTS-2 |
| 62 | Bies / Curren / Rankin / Patterson / Hildock | Curren Motorsports (USA) | Tom Curren | Oldsmobile | Cutlass | Supreme | | GTS-1 |
| 63 | Pace / Hamlet / Downing | Downing/Atlanta Racing (USA) | | Kudzu | DG-3 | WSC | Mazda | WSC |
| 64 | Butt / Higgs / Zitza | Mel A. Butt (USA) | Mel Butt | Chevrolet | Camaro | III | Chevrolet | GTS-1 |
| 67 | Mendez / Hoerr | Luis Mendez (DR) | | Ford | Mustang | | Ford | GTS-1 |
| 68 | Coker / *Roach / *McKinnon | Hendricks Porsche (USA) | Charles Coker, Jr. | Porsche | 968 | Turbo | Porsche | GTS-2 |
| 69 | Spreng / Mummery | Gustl Spreng Racing | | Porsche | 993 Carrera | Turbo | Porsche | GTS-1 |
| 71 | Cross / Kennedy / Conway | Art Cross | | Chevrolet | Camaro | III | Chevrolet | GTS-1 |
| 72 | Fergus / Jochamowitz / *Peters | Champion Porsche (USA) | | Porsche | 964 Turbo | | Porsche | GTS-1 |
| 73 | Lewis / Kelley / White / Bourassa | Jack Lewis Enterprises | | Porsche | 911 Carrera | RSR | Porsche | GTS-2 |
| 74 | Stuck / Adam | Champion Porsche (USA) | Dave Maraj | Porsche | 993 GT2 | R | Porsche | GTS-1 |
| 75 | O'Connell / Millen / Morton | Cunningham Racing (USA) | | Nissan | 300ZX | (Z32) | Nissan | GTS-1 |
| 77 | van Vliet / Arpin / Hubman / Banks | Tim Banks | | Chevrolet | Camaro | | Chevrolet | GTS-1 |
| 78 | Raimist / Singer | Richard Raimist (USA) | Richard Raimist | Porsche | 964 Carrera | RSR | Porsche | GTS-2 |
| 80 | Finotto / Melgrati / Finger | Martino Finotto (I) | | Ferrari | 308 GTB | | Ferrari | GTS-2 |
| 82 | Bacon / Greer / Uria / Mees | Dick Greer Racing (USA) | | Mazda | RX-7 | | Mazda | GTS-2 |
| 84 | Oland / Scavone / Jones | Vito Scavone (CDN) | Vito Scavone | Porsche | 944 | Turbo | Porsche | GTS-2 |
| 86 | Hawkins / Murry / Hendricks | Lloyd Hawkins | | Porsche | 968 | Turbo RS | Porsche | GTS-2 |
| 87 | Annis / Beall / Donavon / Scolaro | John Annis | John Annis | Chevrolet | Camaro | | Chevrolet | GTS-1 |
| 88 | Thomas / Campbell / Johnson | Douglas Campbell | | Mazda | RX-7 | | Mazda | GTS-2 |
| 90 | Riggins / Petery / Carter / *Delano | Riggins Competition | | Oldsmobile | Cutlass | Supreme | | GTS-1 |
| 91 | Schramm / Petty / Hayner | RVO Motorsports | | Chevrolet | Camaro | | Chevrolet | GTS-1 |
| 92 | Montgomery / Overbagh / Casadei / Goldin / Kicak | Hoyt Overbagh (USA) | Hoyt Overbagh | Chevrolet | Camaro | IV | Chevrolet | GTS-1 |
| 93 | Taleb / Michelet / Wilson / *Rojas | Ecuador Mobil 1 Racing (EC) | Henry Taleb | Nissan | 240SX | | Nissan | GTS-2 |
| 98 | Lockhart / Smith / Buhl | Chevron Motorsport | | Chevron | B71 | | Ford | WSC |
| 99 | Wagner / Roach / Dolejší | Konrad Motorsport | | Porsche | 911 Carrera | RSR | Porsche | GTS-2 |