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.