Harald Seiwald
| Team | |
| residence | Hall, Austria |
| Occupation | |
| First races | |
| sponsors | |
| sport achievements |
163 Classica Trophy
| Class: | Solowertung |
| building year: | 1972 |
| cubic capacity: | 5700ccm |
163 Classica Trophy
| Class: | Solowertung |
| building year: | 1985 |
| cubic capacity: | 1500ccm |