Don’t get to excited about fast gears without better brakes and more power.
What do you have for an engine?

My seat of the pants feeling is a 235 or 228 in a 1 ton is good with 4.10, and depending on location, driving style, and what you haul or not then 3.73 might be OK. After that probably need more engine and pretty sure more modern brakes would be appreciated.

•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-