PORSCHE RACING HISTORYBruce Jennings (USA)
1973 : Daytona 24 Hours - 3rd in class
4 February 1973 - Daytona 24 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 77 | Porsche 911 S | 230 1687 | GT+2.0 | George Stone (USA)/Bruce Jennings (USA)/Mike Downs (USA) | Silverstone Racing (USA) | 4th | 3rd | 32nd | 638 laps |
24 March 1973 - Sebring 12 Hours - Non Championship Race
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 77 | Porsche 911 S | GTU | Bruce Jennings (USA)/Bob Beasley (USA) | Bruce Jennings (USA) | 13th | 4th | 36th | 193 laps |
21 July 1973 - Watkins Glen 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 70 | Porsche 911 Carrera RSR | 911 360 0601 | GT | Milt Minter (USA)/Bob Harmon (USA)/Bruce Jennings (USA) | Bob Harmon Racing (USA) | DNF | 18th | 83 laps - Brakes |