PORSCHE RACING HISTORYMark Dorrington Niblett (GB)
1979
6 May 1979 - Silverstone 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 19 | Porsche 911 Carrera RSR | 930 670 0154 | Gr.5 | Mark Dorrington Niblett (GB)/Tony Dron (GB) | L' Escalier (Night Club & Restaurant) (GB) | NC | 25th | 158 laps |
5 August 1979 - Brands Hatch 6 Hours - World Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 20 | Porsche 911 Carrera RSR | 930 670 0154 | Gr.5 | Tony Dron (GB)/Mark Dorrington Niblett (GB) | Mark Niblett (GB) | 15th | 4th | 24th | 199 laps |