Ifr you lower the car you will get stiffer springs to keep the car from hitting the road. You take 1" of travle out of the springs may not sound like much but that's a lot of spring travle you lose. As for handling the track bars need to be changed. the stamped ones on the car are junk. Wats link will solve most of the axle issues. I just don't know what Ford was thinking when they put 500 horses under the hood with GT suspension. Dumbest idea ever. We have been fighting wheel hop forever. I replaces my tires and I got rid of most of it. I can't lower my cart because I already hit my splitter going into my driveway.