My pitman arm needs to be replaced. The parts catalog shows 2 different arms with power steering. 1 with variable ratio steering and 1 without. My steering is 3 to 3.5 turns from lock to lock. Can anyone chime in about this. There is a bulletin on this site that all 1968 400's came with the VRS steering? Ames Performance lists a pitman arm but not with VRS. I am a little confused. Please help me if you can.