[ShamrockCustoms]

well, if you go another inch (total of 5" drop in rear), you will most likely want to use some alignment shims to adjust the pinion angle of the rear end. at ride height, chek the angle at the trans end and at the yoke on the rear to get the angles. 2-4 degrees is what you want. of course, this is assuming that the driveshaft is level. you may be ok without them, but it never hurts to check and double-check. good luck!