Switching from 8-1/4" to 8-3/4" rear ?

RPMagoo said

-- (1) No - I'd have to buy it, from a friend. -- (2) Nuttin -- Probably, won't do it.

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If the 8.75 is an A body unit, and has a limited slip chunk and/or had a more desirable gear ratio, I'd do the swap. NOTHING wrong with the 8.25, but the 8.75 is a bit more stout, so it it also has the other attributes listed above, I'd do the swap. It ain't hard! I'm loving my upgraded 8.75 rear. With the hp I'm running I can hammer on it all I want, I have a better gear ratio, i now have lbp axles, etc.