Maverick rear end swap

So a 71-77 Maverick rear axle is 56.5" drum-drum, or about 5/8" narrower than a SBP A-body 8 3/4, ~1.25" narrower than an A-body 8 3/4 with BBP axles, and about a 1/4" narrower than a BBP 7.25 or 8.25.

Perches are 43.5"c-c, so technically not the same as an A-body which are 43". But I'm guessing no one would blink at squeezing the springs in a 1/4" per side.