Well I want to lift my blazer 4" or so this spring. I have heard about swapping springs for the rear of a blazer up front (52"? I think). I heard it nets about 4-5" lift. Do you need to move the spring hangers when you do this? I would also like to either buy or build a shackle flip. Any info on this would be appreciated. How long of shocks would I need? Would I need ford towers?