Advice on rear swap

Anything big bolt will have a larger center register on the axle so your small bolt wheels most likely will not fit. If you are stuck on the small bolt thing your best bet is the abody 8 3/4. Not cheap but may be the necessary evil.

Cutting a housing down to abody size works too but you'll need all the small bolt stuff to go with it. Axles, backing plates , drums and brake stuff.