PORSCHE RACING HISTORYPorsche 911 Carrera RSR - Chassis No. 911 560 9122
2 May 1976 - Laguna Seca 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 911 Carrera RSR | 911 560 9122 | GTO | Monte Shelton (USA) | Monte Shelton (USA) | 8th | 7th | 7th | 50 laps |
3 October 1976 - Laguna Seca 100 Miles II - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 911 Carrera RSR | 911 560 9122 | GTO | Monte Shelton (USA) | Monte's Motors Co. (USA) | 27th | 21st | 10th | 46 laps |
30 May 1977 - Trans-Am Kent - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 911 Carrera RSR | 911 560 9122 | TA-II | Monte Shelton (USA) | Monte's Motors (USA) | 3rd | 3rd | 4th | 43 laps |
12 June 1977 - Trans-Am Portland - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 57 | Porsche 911 Carrera RSR | 911 560 9122 | Monte Shelton (USA) | Monte's Motors | DNS | 6th |
9 July 1977 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 51 | Porsche 911 Carrera RSR | 911 560 9122 | Gr.5 | Robert Frostrom (USA)/Monte Shelton (USA) | Monte's Motors (USA) | 7th | 7th | 22nd | 162 laps |
31 July 1977 - Trans-Am Hallett - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 54 | Porsche 911 Carrera RSR | 911 560 9122 | TA-II | Robert Frostrom (USA)/John Wood (USA) | Robert Frostrom (USA) | 15th | 8th | 14th | 46 laps |
3 September 1977 - Trans-Am Road America - Race I - Trans-Am
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 54 | Porsche 911 Carrera RSR | 911 560 9122 | TA-II | Robert Frostrom (USA) | Robert Frostrom Racing (USA) | 46th | 13th | 28th | 6 laps - Engine |
16 April 1978 - Road Atlanta 100 Miles - IMSA - International Motor Sport Association
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 51 | Porsche 911 Carrera RSR | 911 560 9122 | GTO | Robert Frostrom (USA) | Robert Frostrom (USA) | 34th | 13th | 37th | 10 laps - DNF |
22 March 1980 - Sebring 12 Hours - World Challenge for Endurance Drivers
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 60 | Porsche 911 Carrera RSR | 911 560 9122 | GTO | Bill Ferran (USA)/Rusty Bond (USA)/Jack Refenning (USA) | Bill Ferran | 29th | 11th | 30th | 172 laps |
21 March 1981 - Sebring 12 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 29 | Porsche 911 Carrera RSR | 911 560 9122 | GTO | Nort Northam (USA)/Chiqui Soldevilla (PR) | Bill Ferran | 57th | 20th | 52nd | 84 laps - DNF |