[DaveO430]

I have an 82 with 2 pots calipers, are the 80s single and totally different?

Yes as stated above, the 80-81 calipers are single piston and completely different but can be used if the mounting brackets are changed also.

 

[DaveO430]

Okay Dave, the post says "quick". It took you 2 1/2 hours to respond. That's not quick.
On the other hand, he did post another question, so I'll let it slide...this time.

At my age 2 1/2 hours is quick.