My truck is 1960 3/4 ton 2WD. With that good ol' 4.57 axle.
Might have found donor axle - late 60's chevy 6 bolt.
If I recall, I have HO52 - how can I tell if this other axle compatible ?
Does donor need to be 8 lug ? It does have better ratio.

1960 C20 Platform