questions on narrowing a C body 8-3/4 axle for an A body

The pinion angle as mounted in car, with the perches level is 5* up for stock set up. I NEVER weld it in at that angle. But, that's the stock set up.

Ask local chassis shops, hot rod places where they get rears done. There should be someone in that city capable of resplining axles. If you had to ship them back and forth it may be more cost effective to buy fresh ones.

Housing 52 5/8" flange to flange, 43" perch centers, pumpkin centered (no offset either side)