Return fuel system w/ current parts?
OK just to put a period on this thread.
I when with new 3/8 fuel line, installed this fuel pump
http://www.gsl392.com/ us a 4 port regulator and the stock 5/16 fuel line as a return. End up flowing around 80 gph at 4 and at 9 psi.(pump is designed for much more pressure than this.)
End up mounting the regulator on the fender and braided stainless over the valve covers to the carb.
This pump is so quit that you can hardly here it with the insulated sleeve that came with it.
Took it to our local 1/8 mile track and test the fuel pressure with a gauge on the wind shield. Never moved from 9psi all the way down the track. Marked out a 1/4 mile on a back road and at 6800 rpm it still held at 9psi.(normally shift at 5800 rpm)
Real happy with the hole new setup!