My car has 54K on it. I am running stock diameter tires with 16" rims. The car sits pretty low and I have dragged a few times and seem to be able to bottom the suspension travel under normal driving conditions. Are there thicker spring pads available? I'd like to raise it from 1/2 to 1" in front and 1 to 1.5" in the rear. Are there inexpensive spacers available or something equally accessible?