* Axle tube width/flange placement: While similar, the slight differences in the chassis might mean the axle housing's mounting points aren't perfectly aligned. This could require modification to the car or the rear end itself.
* Spring perch location: The location of the leaf spring perches on the rear axle housing might not perfectly align. This again would require modification.
* Brake components: While likely compatible, the brake components (drums, calipers, lines) *might* require some adjustment or swapping.
In short, it's *possible* with some fabrication or modification, but it's not a direct swap. You'll likely need to check measurements carefully and potentially do some welding or adjusting to make it fit. It's best to compare the dimensions of both rear ends before attempting the swap.