You can have an 8 lug rear with faster gears if you like.
4.10 can be found used for your original axle.
https://www.stovebolt.com/techtips/axles/1%20Ton%20Upgrade/
Or as fast as low 3.xx for a 14 bolt, they’re plentiful and robust, usually cheap too.
https://www.stovebolt.com/ubbthread.../14-bolt-axle-swap-info.html#Post1249600

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
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"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-