I checked with the Ground Control team, they sent some photos of the front and rear springs. Their set up is different from the KW like I put on the NA coupe. I also have a SRT and I think I will go with the GC since the adjustment can be done with the tire off the ground. He has not sent me the info on the range of height of their spring kit. Happy with my Sport Koni's and if you have good smooth roads you can keep them on the firmer setting for crisper handling. I drilled an 11/16 holes in the back interior covers so I can adjust the rear rebound and got some caps that fit the holes so it looks nice.