Thanks for all the responces. I am not doing the install myself. The shop up the road from me is. For upgrading the 7.5 is a little cheaper for me and I really don't have the room for an extra rear to sit around. I already have headers, intake,tune,wires,and a coil. I also have a steeda strut tower bar,steeda swaybars,eibach pro-kit and an MGW shifter. I figured this would be my next step.