Thunderhill Raceway Park
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| Class | Lap Time | Team | Car | Event Year | |
| 1 | U1 | 1:51.334 | Mumford, Provost | 2003 Viper Competition Coupe | 2003 |
| 2 | U1 | 1:51.529 | Johnson, Dalen, Morris | 2002 Radical SR3 | 2003 |
| 3 | U1 | 1:53.776 | Dalen, Johnson, Morris | 2002 Radical SR3 | 2003 |
| 4 | U1 | 1:54.463 | Morris, Dalen, Johnson | 2002 Radical SR3 | 2003 |
| 5 | U1 | 1:56.704 | Hayashi, Messley | 1992 Acura NSX | 2003 |
| 6 | U2 | 1:58.564 | Smith, Arnold | 1997 BMW M3 | 2003 |
| 7 | U3 | 1:58.799 | Hazelton, Bradfield, Bitterman | 2000 Honda S2000 | 2003 |
| 8 | U2 | 1:59.590 | Mello, White | 1989 Porsche 944 Turbo | 2003 |
| 9 | U2 | 2:00.031 | Kennedy, Rhoades | 2000 Honda S2000 | 2003 |
| 10 | UAGT | 2:00.527 | Lindsey, Flaherty | 89 Ford Mustang | 2002 |
| 11 | U3 | 2:01.468 | Coffey, Lampe | 1970 Datsun 240Z | 2003 |
| 12 | U2 | 2:01.617 | Ondrack, Salter | 72 Porsche 914-6 | 2002 |
| 13 | UAGT | 2:02.036 | Rogers, Barnard | 1965 Shelby Cobra CSX4180 | 2003 |
| 14 | U2 | 2:02.430 | Allan, Allan | 1995 Acura NSX | 2003 |
| 15 | U1 | 2:02.560 | Rosenbaum, Wilson | 92 Ferrari F40 | 2002 |
| 1 | T1 | 2:02.454 | Mumford, Provost | 01 Dodge Viper ACR | 2002 |
| 2 | T1 | 2:02.781 | Wasserman | 2002 Dodge Viper GTS | 2003 |
| 3 | T1 | 2:04.350 | Bragg-Smith, Vietro | 2002 Mosler Photon | 2003 |
| 4 | T2 | 2:05.165 | Kahangi, Beck | 01 BMW M3 | 2002 |
| 5 | T2 | 2:05.749 | Hardee, Southwell | 1991 Acura NSX | 2003 |
| 6 | TAGT | 2:06.537 | Mashouf, Griggs | 94 Ford Mustang | 2002 |
| 7 | T2 | 2:06.638 | Olsen, Schmidt | 1972 Porsche 911 | 2003 |
| 8 | T1 | 2:07.305 | Desalvo, Desalvo | 01 Chevrolet Corvette Z06 | 2002 |
| 9 | T1 | 2:07.340 | Wilson, Kryder | 91 Chevrolet Corvette ZR1 | 2002 |
| 10 | T1 | 2:07.402 | Wilson, Kryder | 1991 Chevrolet Corvette ZR1 | 2003 |
| 11 | T1 | 2:08.047 | Wasserman | 02 Dodge Viper GTS | 2002 |
| 12 | T2 | 2:08.483 | Kahangi | 2001 BMW M3 | 2003 |
| 13 | T2 | 2:09.102 | Young, Donnelly | 94 Mazda RX7 | 2002 |
| 14 | T3 | 2:09.827 | Hull, Arnold | 88 BMW M3 | 2002 |
| 15 | T1 | 2:09.846 | Robinson, Humke | 2001 Chevrolet Corvette Z06 | 2003 |