I don't think changing from a 4.56 to a 4.10 would be worth the trouble. I switched from a 5.14 to a 3.90 in my 47 one-ton and while theoretically I can go 75 mph with 17 inch wheels, it still drives like a tractor, just a nicer tractor. If you're looking for more driver-friendly performance, I'd suggest you look for a lighter (faster?) gear.

My 2 cts

BTW the swap wasn't much trouble.

Don't read the directions, that'd be too easy.