Hello, I have recently became the new owner of a 1989 jeep comanche pioneer. It's 2WD and a short bed. She's got a nice patina on her. And I kinda like it. But I also would like to bring her to her former glory. But seeing its 2WD it wouldn't be a good mud truck or a good off road truck. My plans are to turn her into a race truck. But my first question I have for it is how else could I lower it in the back. For the front I can get some new coilovers for it but in the back I do not know how to get it lower. Would I be able to put a "shim or spacer" between the axle and the leaf spring to make it lower?