So I bought an 8.75" B body housing, axles and perches for $200...

GTX JOHN said

I seem to recall that only C body Axles could be narrowed
as only they had splines cut into axle rather than raised.

As my elderly mind seems to recall from 40 years ago before I
bought aftermarket Axles.

Click to expand...

some can and some can't. i don't have the definitive model/year break downs but i do know that some are indeed "raised" spline, and some of both styles are not splined down far enough to shorten.

same with the B series van axles.