Fuel piping question

67dart273, I am using a return as I stated in my original post.
69 340 GTS, the mallory regulator I have has one inlet port and 3 outlet ports along with a return port.
I can reduce the fitting sizes of the tank thru the pump to -8 AN since I havent purchased the fittings yet. The one thing I have noticed is that the cost of fittings seem to be the same money for -10 vs -8. The hose is slighly higher in price.
You mention that the regulator should be as close to carbs as possible. I guess I will have to look for some pics of where others have mounted theirs.
Rod