A Body 8.75 backing plates

I wondered if some of the b body 8.75 rear ends came with the 10 by 1.75 brakes. I just figured that someone who did large bolt pattern conversion with the 11 inch brakes might have them laying in their parts pile.

Nope. A-body's were the only body style that got the 10x1.75" small bolt pattern rear brakes. All of the B-body's would be the 5x4.5" BBP, and none of the BBP brakes can be used on a small bolt pattern axle. People may have the SBP stuff laying around from a BBP swap, but it would only be from swapping an A-body.

The SBP stuff is out there, I sold a set of 10x1.75" backing plates not all that long ago.