Used rear end sources

Is there a good source out there for a used 10 bolt 8.5 or a 12 bolt for my '70 GS 455? I recently bought the car and am enjoying it but today discovered I have an open 10 bolt 8.2 with different carrier bearing cap sizes which of course nobody services a posi unit for. I'm Northern California so close would also be nice.

Help!?!
Dave

 

rearends

Wha is it your asking for? A shop or carrier caps or a place to get a used rearend??? Jim

 

I'm looking for at least a rebuildable housing up to an entire assembly with useable parts also rebuildable.

Dave