Return style pressure regulator.

69_340_GTS said
This is the one I have. Right now running at 6 psi for the carb, with a return system. So far so good. Great quality product. https://www.summitracing.com/parts/aei-13301/overview/

Yep, that's pretty much my standard go to. I've used that on a bunch of LS conversions and several carb'd cars, too. You'll be happy with that for a long time.