8 3/4 axels???

so i am getting my housing the stock a body length for the 8 3/4 so how long of axels will i need? i thought the a body length for housing was 52 5/8" flange to flange but the guy doing the rear didnt think that was quite right so is checking his books. i found some axels that are 32" and can be cut to 23" with 30 spline. i will hopefully get my center chunk this weekend and can count the splines.