87crewdually
Full Access Member
Lowering the rear will add a tad of positive caster, which isn't a bad thing. The thing you need to check when using a shackle to lower the rear is pinion angle change. You want to be sure your driveshaft has acceptable angles when you are done. If you change the ride height to higher than stock in the front, you will be gouged by an alignment shop to correct it. If you just want it level, and not necessarily taller, dropping the rear would prolly be easier/cheaper.
Travis..
I think you were the only one that understood what i meant.