PORSCHE RACING HISTORYHelmut Kelleners (D)
1968 : Monza 1000 km - 1st in class : Nürburgring 1000 km - 2nd in class : Spa 1000 km - 1st in class
25 April 1968 - Monza 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 68 | Porsche 911 T | GT2.0 | Dieter Glemser (D)/Helmut Kelleners (D) | IGFA | 8th | 1st | 24th | 89 laps |
19 May 1968 - Nürburgring 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 25 | Porsche 910 | 910-019 | P2.0 | Jürgen Neuhaus (D)/Helmut Kelleners (D) | Jürgen Neuhaus (D) | 8th | 2nd | 12th | 42 laps |
26 May 1968 - Spa 1000 km - International Championship for Makes
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 63 | Porsche 911 T | 13448 | GT2.0 | Dieter Glemser (D)/Helmut Kelleners (D) | IGFA (D) | 11th | 1st | 25th | 60 laps |