I just bought my first mustang. 2000. While I was replacing the front control arms I measured the springs. They were almost 2.5 inch's shorter then stock. I want to run a good drag tire this summer but I'm alittle worried about the fit with the lower rear end. The car came with a set of 20s and 15s rims. I'm running new tires on the 15s now to teach my son stick shift. I did find a tire that you can run on a 20 wheel. I've always been a truck guy so please excuse my questions.