Another 8 3/4 question

Te shoe is wider, yes, but the offset is different, too. The distance between the bearing and the wheel flange is different on the small bolt pattern axles than it is for the big bolt axles. Some people make big bolt pattern axles with the A Body offset so that they can reuse the redrilled A Body brakes, but I'd rather just swap to the B/E stuff, myself. It's cheaper than having the drilling done, and still being confined to the more expensive small bolt drums in the future.