Which NV4500 Gearing to Use?

[argonaut]

I have two GM NV4500 transmissions. The first is a 94 with lower, slightly wider spread gearing. The second is a 95 with higher, more closely spread gearing.
Both need new mainshaft and the chosen one will also be getting a general rebuild with bearings, syncros and seals.

My question to you, forum, is which would be best to put into my 66 Short K20? Truck weight is about 5,100lbs wet (sans driver ), has 4.11 diff gears and 35" tires, powered by a fresh, stock 402. Intended use is partly around town, partly fire roads and light rocks, mud, general rough terrain getting to back country. This is not a rock crawler, mud bogger, etc.

94 NV4500
1--6.34
2--3.44
3--1.71
4--1.00
5--0.73
R--6.34

95 NV4500
1--5.61
2--3.04
3--1.67
4--1.00
5--0.75
R--5.61

Any input is welcome!