***7.25 brakes on 8.75 rear-end?*** "SOLVED"

SirDan said

I did it, went from 7 1/4 BBP to a 8 3/4 that was SBP but I got moser axles for BBP. I ended up not having to modify anything but, others have had to deal with the other stud or hole, which really isn't a big deal. I would think it should swap rite over.

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He's doing SBP to SBP, not BBP to BBP. By putting BBP axles in your 8 3/4 you took care of the offset issue with the SBP 8 3/4 axles. The BBP brakes will swap onto any BBP axle, from the 7 1/4 all the way up to the Dana.

From what I understand, SBP 8 3/4" brakes are an entity unto themselves because of the unique offset used on the SBP 8 3/4 axles. I don't believe the backing plates will swap from a SBP 7 1/4 to a SBP 8 3/4. The guts will, but I don't think the backing plates will. But I haven't tried it either, I don't have any SBP 7 1/4's.