Fuel requirement from /6 to 440

yeah, I hear you. there are some "know -it-alls" on the forum who are all too eager to declare everybody who doesn't think like them to be dumbasses. But judge for yourself.
I believe all our classic era Mopars(/6, included) were 5/16" dia. fuel lines, except for Hemi, and 440 six pack. If a mech pump and 5/16" lines were good enough back then, they can work now, too. This is not to say that 3/8" won't work, too, but is it really necessary? I don't think so, especially if we're talking "street" car. I'm not a big fan of electric fuel pumps, they complicate things, they're noisy, and they can be fragile. If you don't need these extra complexities, why even go there?