I have a 68 dodge van .they are notorious for heat soak vapor issues. I put a Carter electric fuel pump on it with the filter out back at the pump. It's wired through a controller that acts like a tach signal .pump only runs when it detects rpms as a safety control. I also wired a momentary switch to it so I can prime the system. I never got around to a return line as the way it is works great.
