totopo

Caroll smith recommends minimum 2.5" to better 3" of front bump travel, and more in the rear. So assuming you get roll angle adjusters and bump steer correction, and make sure nothing else in the wheel well interferes, then with the 5" or so clearance, you probably can have a max drop of 2" without hurting the performance, and maybe increasing the performance. In order to do that though, roll center adjusters and super stiff springs, and properly matched good shocks are a must.