More food for thought, 5.38's and 37's offroad in 1 lo sucks, double low I'm hoping to be good on hill climbs, also, when building that dana 30, don't cheap out on axle shafts, u joints and don't go above 5.13 gears ever. I've watched r&p's blow up, and my buddy that I'm building a buggy for blew up his axle shafts every trip. Dana 30 with cheap u joints, spun the splines once also, Another thing, use an aftermarket full carrier locker, broke one of those in half at the center pin also, fun trip, This was under a smoking i6 and 5 speed trans with stock 2.73:1 t case ratio on 35" bfg a/t's that measured to 33". I would of personally gone to a 44 front because of strength but it's all up to you.