Can't help with the gear selection, but I'm wondering what chassis mods your looking at? Boxing in the frame, beefing up cross members, Some sort of suspension lock to keep from squatting too bad? I've seen guys hook up to the sled and just destroy their rides from simple weaknesses. They get one half pull at less than 100ft. and get loaded on the trailer for the ride home and you never see the truck again. I've seen some pin in suspension blocks installed for pulling.....3 point pin flanges welded to the axle housing and frame and heavy gauge tubing pinned in at 3 angles on each side to lock the axle in place with no suspension squat. Inexpensive mod that can be pinned in at the track and removed when it's time to drive home. We haven't had a private mud pit or pulling track around my area in 10 or 15 years, but some guys got some awesome pulls with stuff they drove to and from the track.
1995 SWB 300 I6, M5OD, 273 gears, 235/75r15's, 21MPG, 50" Led Light Bar, 6" Off Road Lights, Full Synthetic Fluids, K&N RF1012
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