A Body 8 1/4 rear end

73+ for the 8.25 rear. Should be a 3.21, 3.23 was an 8.75 rear ratio. Maybe its actually an 8 3/4. Have you actually seen it already?
I recently parted a slant six 71 swinger and it had an 8 3/4 ! I didnt even know until I got it home so that was a very nice bonus.
Housing length should be comparable to the 8 3/4. May be slightly different because of the BBP...not sure. The spring perches are the same.