A Body 8.75 housing/axles dont match

so the housing is 51 3/4 from housing end to housing end and the perches were 43" or 44" on center. < sorry long day

Sounds like the housing is a little over 3/4" too narrow. Should be 52-5/8" end to end.

Somebody may have cut it down using that stupid chart that's on mymopar.com and now it's too short.