Mine is stock with the three speed manual (on the tree). It has 4.10 gears (2 wheel drive). It takes a load pretty well but tops out below freeway speed. The tires are a little taller than stock but not crazy. If you want cheap a rear in the 2.9:1 range would work awesome with an OD833 out of a /6 truck- 3.09 first gear and .71 overdrive is quite a spread. Once again the light weight would be crucial to not lug it down too far on shifts.

Good luck it's an awesome motor. The scariest part about my truck is it runs perfect and always starts right up! I guess they don't make em like they used to.

Rdr