PORSCHE RACING HISTORYPorsche 911 Carrera RSR - Chassis No. 911 460 0100
One of 15 RSRs specially built for Roger Penske’s IROC Series 1973 - Roger Penske aquired new from Porsche
27 October 1973 - IROC Riverside 1 - IROC - International Race of Champions
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 911 Carrera RSR | 911 460 0100 | Emerson Fittipaldi (BR) | Roger Penske (USA) | 12th | 11th | 9 laps - Accident |
20 March 1976 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 52 | Porsche 911 Carrera RSR | 911 460 0100 | GTO | John Tunstall (USA)/Chuck Wade (USA) | Starbrite | 23rd | 16th | 74th | 173 laps |
19 March 1977 - Sebring 12 Hours - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 911 Carrera RSR | 911 460 0100 | GTO | John Tunstall (USA)/Chuck Wade (USA) | Starbrite | 72nd | 44th | 30th | 2 laps - Suspension |
17 April 1977 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 911 Carrera RSR | 911 460 0100 | GTO | John Tunstall (USA) | John Tunstall | 11th | 11th | 32nd | 37 laps |
5 February 1978 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 54 | Porsche 911 Carrera RSR | 911 460 0100 | GTX | John Tunstall (USA)/Stephen Behr (USA)/Lou Timolat (USA) | T & C | 61st | 25th | 38th | 70 laps - Flywheel |