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correct..but the 8 3/4 A-body would still have a 4" wbp with the larger drums/brakes IIRC

no A-body 8 3/4 got the 5 on 4.5 wbp



not sure what you are saying but the largest brakes available on an 8.75 equipped A body , and the only ?? , was the 10x1.75 and the offset of the a body axle is about a 1/4 less than all other cars .

Yes there was not a 4.5 BP 8.75 .... EXCEPT for MAYBE the 68 SS Hemi A bodies WITH automatic trans ???



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Well what would you do then on a 73+ A-body to fit the bigger bp - B/E drums and machined axles?
{EDIT] It's looking like either custom order or C-body axles so you have enough beef to cut and respline them?



73/up got the standard offset axles as bigger cars and used their brakes when equipped with 10" drums so you either cut down C barge axles or better just buy a set of better quality axles.