It actually doesn't depend on what kit you use. While the MP kit claims to move the springs 3/4", if you actually measure the front hanger the difference is only 1/2" from stock.
All of them I have ever installed from MP were right on top of 3/4" Here's the proof. The others that only move them in 1/2 do not require a hole in the frame rail for the nut on the back side of the front hanger, the MP hangers do. I have installed a lot of these kits. I don't know where you're measuring from, but either one of two things has occurred. Either Mopar has changed the kit to only move them in 1/2", OR you are measuring incorrectly.
