PORSCHE RACING HISTORYPorsche 911 Carrera RSR - Chassis No. 911 460 0016
One of 15 RSRs specially built for Roger Penske’s IROC Series and is one of just a few of the 15 RSRs that competed in all four of the races. 1973 - Roger Penske aquired new from Porsche 1974 - Grey Egerton 1975 - Vasek Polak 1998 - Tom Linton 2005 - Jerry Seinfeld 2016 - Sold at Gooding Amelia Island Auction for $2,310,00
27 October 1973 - IROC Riverside 1 - IROC - International Race of Champions
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 3 | Porsche 911 Carrera RSR | 911 460 0016 | Peter Revson (USA) | Roger Penske (USA) | 3rd | 2nd | 30 laps |
27 October 1973 - IROC Riverside 2 - IROC - International Race of Champions
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 10 | Porsche 911 Carrera RSR | 911 460 0016 | Gordon Johncock (USA) | Roger Penske (USA) | 9th | 3rd | 29 laps - Accident |
28 October 1973 - IROC Riverside 3 - IROC - International Race of Champions
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 4 | Porsche 911 Carrera RSR | 911 460 0016 | Peter Revson (USA) | Roger Penske (USA) | 7th | 9th | 30 laps |
14 February 1974 - IROC Daytona - IROC - International Race of Champions
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 4 | Porsche 911 Carrera RSR | 911 460 0016 | George Follmer (USA) | Roger Penske (USA) | 5th | 4th | 13 laps - Transmission |