Dead head stuff here on all of the cars. Weldon pumps with bypass to cell from pump set between 27-32 depending on car. All regulated down to 4.8-5lbs at carb. All 4 port Weldon regulators for single carbs. No issues ever with this setup. Been .99x-1.0 60's with this set up. Same stuff we run in the Vette. If its good enough for aerospace industry and Nasa it is good enough for a racecar.