PORSCHE RACING HISTORY1978 - Interserie Nürburgring 300 km
2 April 1978 - Nürburgring Nordschleife, Germany
Reinhold Joest second in a Porsche 908/03, 0.4s behind the winning Osella PA6 driven by Giorgio Francia
Overall - 2nd : S+2.0 - 1st
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 1 | Porsche 908/03 | 908/03-008 | S+2.0 | Reinhold Jöst (D) | Liqui Moly Equipe (D) | 2nd | 1st | 1st | 11 laps |
European Sportscar Championship
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