PORSCHE RACING HISTORYPorsche 911 Carrera RSR - Chassis No. 911 360 0915
21 July 1973 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 43 | Porsche 911 Carrera RSR | 911 360 0915 | GT | Dave Helmick (USA)/John O'Steen (USA) | Ecurie Escargot (USA) | 12th | 4th | 24th | 164 laps |
13 July 1974 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 43 | Porsche 911 Carrera RSR | 911 360 0915 | GT | John O'Steen (USA)/John Graves (USA)/Dave Helmick (USA) | International Performance Center, Inc. (USA) | 13th | 3rd | 22nd | 126 laps |
2 February 1975 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 43 | Porsche 911 Carrera RSR | 911 360 0915 | GTO | John O'Steen (USA)/Dave Helmick (USA)/John Graves (USA) | Escar (USA) | 6th | 6th | 10th | 619 laps |