I need some help. I just bought a new 12 bolt carrier, ring gear, pinion and all new bearing to replace what I thought was a 12 bolt setup. I had a 12 bolt housing but when I pulled the guts of the rear it was all 10 bolt. What can I do now? Please dont say all that new stuff is useless now. Thanks for the help. cworm. cww@dmv.com this is out of my 1971 chevelle.

try to find a chevy 12 bolt housing

it appears that you have an olds rear (10 bolt ring gear and 12 bolt cover)