[Marcro]

There is a store in my town called OEM and they supply everything you can imagine as for scratch building a robot, or a computer, or what ever electric. I bet they will have spring's and stuff I can use to make-up a rear shock for this. It's an awesome place to visit. If you knew what you were doing, you could literatlly scratch build a computer peice by peice. They have springs and bearings of every size in existance!