Today I decided to do some very basic measurements on the upper joint. I have a 2010 4x4 4.6. Adding a 2.5 inch lift to the front will reduce the ball joint swing by 16 degrees. That is a tremendous amount. A 1.5 lift will reduce it by 8 degrees. A Moog ball joint has 36 degrees from center. The Mevotech ball joint has 40 degrees from center. Just some information for anyone thinking about lifting their truck.