For what you have, I would run a Holley red pump w no regulator or return.. I agree I don’t think you need an electric pump, but I understand it s a matter of preference. I run a carter mechanical with no regulator and it feeds a 575-600hp stroker. I haven’t raced it, but it works perfectly and has no fuel delivery issues stomping on it on the streets and highways.
That's what I would do. I always run an electric pump on my street/strip cars. And I ran the Holley red pump o my Dart for many years from 1997 to 2018. Has internal regulation as Tony says so it needs no ext regulator or return line. I also ran one on my my 63 from 2006 until 2011 as I updated to the Black pump and external regulator when I put my 493 in my car. I prefer the electric pump all day over a mech on my cars as that way I can keep the fuel line away from the eng and the electric pump helps fight vapor lock. Good luck with yours. Ron
