I know you said swap the Axel. But swapping the ring and pinion. You'd end up with a 4.11 rear. This also retains the 8 lug wheels. You swap the 4.57 for a 4.11 easy swap

https://www.stovebolt.com/techtips/axles/1%20Ton%20Upgrade/


Julian Carter

1970 Triumph GT6
1967 Triumph TR4A
1952 Chevy 3600
1948 MG-TC