If you have a ~400hp (or less) carb motor what pump are you running? Something as simple as https://www.summitracing.com/parts/s...36-1/overview/ ?

I plan on running the supplied 5/16 fuel & 1/4 return lines, and using a firewall-mounted bypass regulator and pressure gauge. Most seem to say the pump regulator is fine though, so I may skip that (and the return line).

There's more room for the pump at the rear, but I'd love to see where you've mounted yours..