can 8&3/4 SBP axles be redrilled to 4&1/2" BBP?

I have BBP rims & this would save some $$$. And could they drill these for 1/2" studs? thank you for your time. RR
Do yourself a favour, you can buy brand new ones with new bearings pressed on for $300 in Montana. You’ll need later style 10" backing plates which will also allow you to run 10x2" brakes where parts are readily available at pretty much any corner store.

Your wheels can be up to 8" with about 4.5" ish backspacing and fit comfortably with up to 275/60r15 tire on some models (duster, dart sport) or 255/60r15 on others like dart swinger….

Mopar Axle Package 5 X 4 1/2" (5 X 4.5) Bolt Pattern 30/35 Spline