PORSCHE RACING HISTORYAndres Contreras (MEX)
1975 : Daytona 24 Hours - 2nd overall
2 February 1975 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 11 | Porsche 911 Carrera RSR | 911 460 9049 | GTO | Michael Keyser (USA)/Billy Sprowls (USA)/Andres Contreras (MEX) | Toad Hall (USA) | 2nd | 2nd | 16th | 669 laps |
15 June 1975 - Le Mans 24 Hours - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 65 | Porsche 911 Carrera RSR | 911 560 9117 | GTS | Billy Sprowls (USA)/Juan Carlos Bolaños (MEX)/Andres Contreras (MEX) | Porsche Kremer Racing Team (D) | 9th | 5th | 24th | 304 laps |