A Body 8.75 Rear End

You realize that a BBP 8.75 A body rear will likely have aftermarket/resplined axles in it.

I have an A body rear with SBP complete with brakes.

Have a set of BBP yukon A body axles. Might have some BBP brakes.

Got 3.91, 3.23 and 3.55 sure grip pumpkins.

The 8.75 a body rears aren't cheap, housings alone go for in the 275-300 range out here. Add in the special stuff that you want which isn't normally on them and it adds up quickly.