2012 CC frontier: I have a winch on a homemade carrier, factory plastic bumper and full coverage White Knuckle rock sliders that add extra weight to the front, (unknown how much) went with medium ADO coils and 1/2" lift spacer, actually got 1-1/4" of lift. I changed to a 1-1/2" spacer, spring seat at "0" and got 2-3/4" of lift, ride is great, no noises, truck handles well. maybe should have gone with heavy coils but I'm very happy with what I have.