I curently have a ProComp 2" Level lift on the front of my 02' 4x4. After reading a lot of the threads I have decided that I am going to remove it shortly and replace it with the Bistein 5100 adjustable. I have no desire to raise the rear of my truck but I do have to replace the rear shocks since that time has come. Is it necessary to use the 5100's on the rear as well? If not, does anyone have a recommendation on what the rear shocks should be (w/o breaking the bank of coarse)? Thanks for any advice.