PORSCHE RACING HISTORYEdi Kofel (CH)
1981 : Silverstone 6 Hours - 1st in class : Nürburgring 1000 Km - 3rd in class
10 May 1981 - Silverstone 6 Hours - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 33 | Porsche 924 Carrera GTR | GT | Peter Zbinden (CH)/Edi Kofel (CH)/Marco Vanoli (CH) | Formelrennsport Club Zurich (CH) | 9th | 1st | 27th | 194 laps |
24 May 1981 - Nürburgring 1000 Km - World Championship for Drivers and Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 44 | Porsche 924 Carrera GTR | GT | Peter Zbinden (CH)/Edi Kofel (CH) | Formel Rennsport Club, Zurich | 18th | 3rd | 30th | 14 laps |