@TrailBeast ....follow up question to hopefully help with
OP's sale. Will the original axle splines from an A body 8.25 work in the newer Jeep/Truck carriers?
They did in mine and it's an original 1973-4 diff.
Just took smaller OD bearings to put the jeep carrier in the OE diff.
It's actually the side gears that matter what the spline is, and they were both 27.