A Body LARGE bolt pattern rear brakes

My so-called brain isn't functioning very well right now, and try though I might, I still am not 100-percent sure about this: After I put 4.5"-bolt circle axles in my 8.75" A-body housing, is there any reason why I can't use a pair of '73-up drums off a Duster with an 8.25" housing?

I don't want to go to the trouble of putting the whole B-Body hardware system (backing plates, shoes, etc.) on my car if an A-Body drum from a 1973-up 4.5" bolt circle, 8.25" rear end willl work.

I'm pretty sure from what folks wrote that it will.... just want to be certain.

Thanks for any info!!!

Bill, in Conway, Arkansas

Bill if you are converting an 8 3/4 rear to LBP you MUST replace the rear brake assembly COMPLETELY ... backing plates and all .... , the 73-up setup off the 8 1/4 is the same as the B body brakes you are asking about .