PORSCHE RACING HISTORYHelmut Marko (A)
1968 : Zeltweg 1000 km - 1st in class
25 August 1968 - Zeltweg 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 16 | Porsche 906 | 906-154 | S2.0 | Helmut Marko (A)/Gerold Pankl (A) | Bosch Racing Team (A) | 9th | 1st | 13th | 145 laps |