| 1993 | Special Purpose Vehicles | Gas | 18.1–19.6 | — | 5.2–5.9 L |
| 1992 | Special Purpose Vehicles | Gas | 18.1–23.5 | — | 5.2–5.9 L |
| 1991 | Special Purpose Vehicle 2WD, Special Purpose Vehicles | Gas | 18.1–23.5 | — | 5.2–5.9 L |
| 1990 | Special Purpose Vehicle 2WD, Special Purpose Vehicles | Gas | 18.1–23.5 | — | 5.2–5.9 L |
| 1989 | Special Purpose Vehicle 2WD, Special Purpose Vehicles | Gas | 18.1–23.5 | — | 5.2–5.9 L |
| 1988 | Special Purpose Vehicle 2WD, Special Purpose Vehicles | Gas | 16.8–26.1 | — | 5.2–5.9 L |
| 1987 | Special Purpose Vehicle 2WD, Special Purpose Vehicles | Gas | 18.1–26.1 | — | 5.2–5.9 L |
| 1986 | Special Purpose Vehicle 2WD, Special Purpose Vehicles | Gas | 18.1–23.5 | — | 5.2–5.9 L |
| 1985 | Special Purpose Vehicle 2WD, Special Purpose Vehicle 4WD | Gas | 18.1–23.5 | — | 5.2–5.9 L |
| 1984 | Special Purpose Vehicle 2WD, Special Purpose Vehicle 4WD | Gas | 19.6–23.5 | — | 5.2–5.9 L |
