i have driven a truck with the super runner kit on it, was my old 86 BII on exploder axles with the 8" superlift kit, had a modified super runner steering on it, i was runnin 38" ground hawgs on that thing, and even with VERY close to being perfect steering due to the width of the tires, the weight of the truck, and tires being bias ply, they still wandered and had massive amounts of bump steer, i installed a dual steering stabilizer on the truck and the bump steer was greatly reduced.
i have built more trucks then u could ever begin to imagine, this is my NINTH RBV, and yes im only 21, i eat sleep and breathe trucks, and while ur busy doing ur mechaincal masturbation style mods, im busy buildin trucks with a purpose, i dont have todo research, im speaking from REAL WORLD experience
75% of my vehciles ive ever driven (which is like 30 vehicles) have been on 38's or bigger, when u have had as many trucks as i have, and built as many trucks as i have, then u can come talk to me, i may not always be right on with specifics of some shit, and i know that, but u put me up against most on this site and ill work circles around them AND do a better quality job at the same time.
now that being said, im gonna wait for the original poster to reply and go from there becuase trying to tell u anything is like tryin to keep cake from rosie.....
so...in ur words, SCREW OFF, i got a truck togo and finish putting in the axle