Has anyone used or know of someone who has used the Truxxx leveling kit on a 2004-2008 F-150? I want to know if I should get the 1in lift for the rear. The kit is for 2.75 of lift. They offer 2 kits, one w/o the 1in rear lift and one with. I have the 2in Tuff Country leveling kit and my truck is still not level.