The 4" Rancho I have on my truck was an easy 4" with hardly any t-bar cranking ... one of the reasons it rides car-like. The shop where I had it installed said I could get close to 6" if I wanted to crank the t-bars more ... but then would have to add more height in rear to keep truck level. I am VERY satisfied with the Rancho lift and the smooth, car-like ride.
03\' 2500 HD LT CC 4x4, D/A, Rancho 4\", Weld Evo\'s, BF 315-70R17 KO\'s, Autometer gauges, Banks 4\", AFE Stg II, LineX, Bilstein SS shocks, OilGuard, Racor 660 Pre-oem, Juice 4.61 <a href=\"http://home.comcast.net/~tophog/duramax/2003_dmax.htm\" target=\"_blank\">(Photos)</a>