| 1981 | Chevrolet | K30 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1982 | Chevrolet | K30 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1983 | Chevrolet | K30 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1984 | Chevrolet | K30 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1985 | Chevrolet | K30 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1986 | Chevrolet | K30 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1981 | GMC | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1982 | GMC | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1983 | GMC | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1984 | GMC | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1985 | GMC | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1986 | GMC | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1988 | GMC | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1989 | GMC | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1990 | GMC | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1991 | GMC | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1988 | Chevrolet | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1989 | Chevrolet | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1990 | Chevrolet | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1991 | Chevrolet | K3500 | Fits 4 Wheel Drive | Fits models with 56 inch springs only. |
| 1981 | Chevrolet | C30 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1982 | Chevrolet | C30 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1983 | Chevrolet | C30 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1984 | Chevrolet | C30 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1985 | Chevrolet | C30 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1986 | Chevrolet | C30 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1979 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1980 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1981 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1982 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1983 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1984 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1985 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1986 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1988 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1989 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1990 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1991 | GMC | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1988 | Chevrolet | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1989 | Chevrolet | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1990 | Chevrolet | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |
| 1991 | Chevrolet | C3500 | Fits 2 Wheel Drive | Fits models with 56 inch springs only. |