I did the V-codes on the front of my X along with the F-codes in the back about a year ago. My V-codes have sagged around 3/4" to 1". My F-codes have an additional leaf added so now the rear sits a bit too much higher than the rear. I like the look in the back and dont want to drop the rear leaf. I want to go to 35" tires also. I have measured from the ground to the edge of the fenderwell front and back and the rear sits 2.5" higher than the front. I would like to level the truck with different springs up front or maybe the Fab Tech shackle kit. The V-codes ride better than stock so I dont want to loose this with stiffer springs. Considering how high the rear is I may need 4" springs. My question is of course what springs to run. Many companies make 4" springs for the X and Superduties but I dont know which ride best. The Fab-Tech shackle kit may do the trick but I dont know what it will do to the handling. What about a mini spring pack under the V-codes? Anyone have experience with this??