PORSCHE RACING HISTORYChassis No. 904-055
31 May 1964 - Nürburgring 1000 km - World Sports Car Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 45 | Porsche 904 GTS | 904-055 | GT2.0 | Gerhard Koch (D)/Ben Pon (NL) | Racing Team Holland (NL) | 3rd | 1st | 12th | 43 laps |
22 June 1964 - Le Mans 24 Hours - World Sports Car Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 33 | Porsche 904 GTS | 904-055 | GT2.0 | Ben Pon (NL)/Henk van Zalinge (NL) | Racing Team Holland | 8th | 2nd | 28th | 319 laps |
5 July 1964 - Reims 12 Hours - World Sports Car Championship
| No. | Car | # | Class | Drivers | Entrant | Pos | Class | Grid | Notes |
| 39 | Porsche 904 GTS | 904-055 | GT2.0 | Ben Pon (NL)/Rob Slotemaker (NL) | Racing Team Holland (NL) | 7th | 3rd | 25th | 270 laps |