Ok, I have a 2015 Titan pro 4x with a PRG 3.5" lift consisting of PRG UCA's, bilstein shocks front and rear, 5100's and 5125's I believe), and all the other components. I want to jump up to the 6" lift. What do I need and what is the most economical way to do this?
The 5100's will be fine in the front, you're just throwing a spacer on top. The 5125's will be too short for the rear. RC is the cheapest 6", and then get new 5125's for a 2-4" block.