I thinking about fabricating a dump trailer over the winter but don't want to start until I know I can find and afford the right parts for it. Specifically is the pump, cylinder and correct scissors for the dump mechanism. The only place I've found a pump at is in the Northern tool catalog. I want it to be a 14' trailer for dumping leaves and other debris. Nothing heavy like topsoil. Anybody have any ideas of where I should look for the parts or possible plans?