[Ivan D.]

control arms are different length, the uppers being shorter - when aired out the camber will increase towards inboard no matter what. When you set up suspension geometry you do it at the desired ride height, meaning yer cruise height - for instance my topless Lincoln is lowered in the front and jacked up in the rear, could have aired the rear out to level it a bit before getting it on the alignment rack but that ain't how I normally drive it, so I put it on as is. So yeah, figure out how high you want yer truck off the ground (both front and rear) and then take it for alignment like that.