Scratched my head for a min figuring out how I wanted to do the return system without re doing the whole fuel system . Thought I’d post it up maybe I can help someone save some money that wants to. The pumps msd flows 43 gph @40 psi should support 400 hp which the white girl will need for the first stage of dry nitrous. I know that is actually a carb regulator but it got to 60 psi cranked all the way in even with a 4an return coming off the rail pressure test tap. Nitrous coming soon.