I need some advice on installing a central hydralic system. Mainly to run a hydro sander. I already have a tank, pump, and valves. The sander is set up with one motor that operates the spinner and drag chain. I would want the pump to have an electric clutch (the truck it came off of just ran it constantly) Can someone give me advice as to where to find the parts I need and what else I need to think about? Thanks.