I'm taking an AutoCAD class, and I thought about taking the measurements of the stock rear spring pads (The rubber pads the leaf spring is sandwitched between), making an AutoCAD drawing, and having a machine shop machine some steel versions of the pads. Would this be a good idea to do? I've heard Wart mention the rubber pads being one of the weak points of the MII suspension, so I thought this might help it out. Is steel a good material? Would aluminum or polyurethane be better?