I have a 2007 mega cab with the 5.9. I'm 95% sure that the lift is a 6" Rancho. I purchased the truck with the lift already on it, that is why I'm not 100% (the shocks are Rancho). The problem that I'm having is the front of the truck bottoms out on the bump stops or what is left of them (on 12K), and it does not take much to make them hit, and it about to drive me nuts plus It's embarrassing when some is with me. I have a truck that looks like it can go anywhere but over a speed bump or bump in the street.Does anyone have any suggestions besides getting a different brand?