Originally Posted by 1ownerT
Any 78-87 GM G-body, Monte, Cutlass, Grand Prix, Regal, el Camino, etc.
And of course all of those will be the same weak-kneed 7.5". The only other bolt-in axle is the 8.5" used only in the 1984 Hurst/Olds, 1985-87 442, or 1985-87 Buick GN. Expect to pay "market pricing" for one of those.