I have a piston pump (high pressure) that I pulled of a motor I recently bought and would like to use it on my truck. Is the spacer that came on the later 12V the same as I need to do this conversion? If so, all I need is a bypass regulator and a fuel line which isn't an issue. Am I correct? :confused013: Anybody recommend a good regulator to get me from 30 down to 15psi?