Trying to pick the best lift for my 3/4 ton 90 suburban. Looking for 4" lift and run 35" tires on a 16" rim. I have been looking at ORD and can't decide between new leaf pack for the rear or a shackle flip. My other concern with a shackle flip is the rear of the suburban is already lower due to springs sagging slightly. Possibility of the zero rate add a leaf to help with the sagging in the rear with the shackle flip.
