8-3/4 question

I`ve always been of the same opinion as Prine,... that there were no BBP 8.75 A-bodies but I feel almost anything is possible??? Unless the seller bought the car new equipped like that then there is no way to tell what has been done to the car over the last 35 years. Will the axles/backing plates from a 8.25 interchange with the 8.75?