July 16, 2007I'm going to be helping a friend install a ProComp 4" lift on an 02 F150 4x4. Just curious if anyone has done this and if there are any areas of the install that might be difficult. I've downloaded the instructions already and went over them to get a feel for everything ahead of time. We're mechanically inclined and have all the tools, and any tool we might not have we can get. Thanks for the input.