| 02 | Barbosa / *Bourassa / *Stewart | Morrison/Mosler Racing | | Mosler | MT900 | R | Chevrolet | GT |
| 07 | Wagner / Marshall | G&W Motorsports (USA) | | Porsche | 993 GT2 | | Porsche | GTS |
| 09 | Conway / Goad | Team X-1R (USA) | | Chevrolet | Corvette | | Chevrolet | AGT |
| 5 | Bingham / Johnson | Fordahl Motorsports (USA) | | Saleen | S7-R | | Ford | GTS |
| 6 | Bentley / Sherman / *Macaluso | Miracle Motorsports (USA) | | Riley & Scott | Mk III | | Ford | SRP |
| 7 | Gleason / Burrows / Bunting | Genesis Racing | | BMW | M3 | | BMW | GT |
| 9 | Pappas / Lowman / Assentato | Genesis Racing | | BMW | M3 | E36 | BMW | GT |
| 10 | Fairbanks / Whitehead / Hayner / *Goldsborough | Genesis Racing (USA) | Rick Fairbanks | BMW | M3 | E46 GT | BMW | GT |
| 11 | Bupp / Leavy / Mills | Hamilton Safe Motorsports (USA) | | Chevrolet | Camaro | | Chevrolet | AGT |
| 15 | Altenburg / Hiskey | Fordahl Motorsports/Crazy Redhead Racing | | Porsche | 996 GT3-RS | | Porsche | GT |
| 16 | Weaver / Leitzinger | Dyson Racing Team (USA) | | Riley & Scott | Mk III | Series 2 | Ford | SRP |
| 20 | Wallace / Dyson / Forbes-Robinson | Dyson Racing Team (USA) | | Riley & Scott | Mk III | | Ford | SRP |
| 21 | Lally / Macey / Oberto | Archangel Motorsport Services (USA) | Michael Johnson | Lola | B2K/40 | | Nissan | SRPII |
| 22 | Durand / Forgeois / Connor | Archangel Motorsport Services (USA) | Michael Johnson | Lola | B2K/40 | | Nissan | SRPII |
| 27 | Theys / Baldi / Lienhard | Lista Doran Racing (USA) | | Ferrari | 333 SP | | Judd | SRP |
| 28 | Field / Field | Intersport Racing (USA) | | Riley & Scott | Mk III | | Ford | SRP |
| 32 | Yarosz / Heinricy / Weinberg | Phoenix American Motorsports | | Chevrolet | Corvette C5 | | Chevrolet | GT |
| 34 | Pumpelly / Ivankovich / Dilorio | Zip - Pumpelly Racing | | Porsche | 996 GT3-R | | Porsche | GT |
| 37 | Field / Gavin | Intersport Racing (USA) | | Lola | B2K/10 | | Judd | SRP |
| 42 | Byrne / Millman | Orbit (USA) | Rodger Hawley | Porsche | 996 GT3-RS | | Porsche | GT |
| 43 | Baron / Hindery / Buitoni | Orbit (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 46 | Hitt / Sprinkle | ACP Motorsports (USA) | | Chevrolet | Corvette | | Chevrolet | AGT |
| 50 | Stanton / Hajducky | Aasco - Boduck | | Porsche | 996 GT3-R | | Porsche | GT |
| 54 | Jennings / Borcheller | JET Motorsports | | BMW | M3 | E46 GT | BMW | GT |
| 57 | Collin / Buttiero | Seikel Motorsport (D) | Peter Seikel | Porsche | 996 GT3-R | | Porsche | GT |
| 61 | Merzon / Wilson / Demeroutis | Case It Racing | | Porsche | 996 GT3-RS | | Porsche | GT |
| 62 | Grupp / Hampton / Waddell | Team Spencer Motorsports | | Kudzu | DLM | | Mazda | SRPII |
| 72 | Worth / Sansone | Pettit Racing (USA) | Cameron Worth | Mazda | RX-7 | | Mazda | GT |
| 74 | Baldwin / Robinson / O'Connell | Robinson Racing | | Riley & Scott | Mk III C | | Judd | SRP |
| 74T | Baldwin / Robinson / O'Connell | Robinson Racing (USA) | | Riley & Scott | Mk III | | Judd | SRP |
| 75 | Policastro, Jr. / Jeannette / Policastro | Gunnar Racing (USA) | | Porsche | 996 GT3-RS | | Porsche | GT |
| 78 | Roussel / Mirro / Sezionale | Sezio Florida Racing Team | | Norma | M2000 | -01 | Mader | SRP |
| 80 | Schrom / Cobb / Paez | G&W Motorsports (USA) | | Porsche | 996 GT3-R | | Porsche | GT |
| 81 | Law / Murry / Drendel | G&W Motorsports (USA) | | Porsche | 996 GT3-R | | Porsche | GT |
| 82 | Greer / Finger | Dick Greer Racing - Wendy's (USA) | | Chevrolet | Corvette | | Chevrolet | AGT |
| 88 | Veilleux / Dumoulin / *Overing | Porsche Haus Racing (CDN) | | Lola | B2K/40 | | Nissan | SRPII |
| 89 | St. Jacques / Pootmans / Julien | Porsche Haus Racing (CDN) | | Lola | B2K/40 | | Nissan | SRPII |
| 92 | Gabel / Bleustein / *Schultheis | Schultheis Racing | | Porsche | 996 GT3-RS | | Porsche | GT |
| 93 | Jacques Guenette | Xemis Corp (CDN) | | Porsche | 993 Carrera | 2 | Porsche | GTS |
| 97 | Argetsinger / Bartkiw / Minkin | Gunnar Racing | | Porsche | 993 Carrera | RSR 3.8 | Porsche | GT |
| 99 | Schumacher / Snow | Schumacher Racing (USA) | | Porsche | 911 GT1 | | Porsche | GTS |