Sounds like a caster issue to me...Try driving a truck with a solid front axle really fast backwards...You can hardly keep it straight.....I did a 2wd to 4wd conversion (among other conversions
) with kingpin D60 and I've had good luck so far. No shakes or death wobbles and my truck hasn't been lined up on a machine. I set my toe out about 1/8 and that's it. I have the stock trac-bar and a steering stabilizer....Drives like a dream at 80mph.
It dog tracks a tiny bit (according to my cousin who followed me home one day) but it's hard to be perfect with a 3/8 drill while sitting on your butt on the garage floor.
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