On my 72 chevelle it has a 5/16 fuel line. I'm installing a 434, 600 to 650 hp. Don't want a fuel cell and I don't really want to put a sump in the stock tank, would a BB sending unit, 3/8, and a 3/8 line to the front be enough? I was thinking of running the Holley 80 gph pump, mech, that doesn't need a reg. I could run a 1/2 in line but I'd still have the tank issue. What's your ideas on this?