68 - 72 A body 12 bolt from 442

[Zman1969]

Lynn. another good option would be 71-72 cutlass, skylark 10 bolts - they were 8.5", use bolt in axles (that are not tapered) gears and posi's are alot easier to find than 12 bolts
I wouldnt hesitate a bit using this rear. I have built many in the past let me know if this interests you I know where a couple are
Oh and avoid the Olds 12 bolt - hard to find parts for