[Jerry Clayton]

A 3/8 pipe fitting with a -8 an line works fine--the 3/8 fitting can be drilled out ti the id of 1/2 line which I use Stainless hardline with .035 wall making the fitting id only .430 so the 7/16 (.443) fine. You will have more restrictions with turns than from line size.

There are high performance mech pumps by several companies with the 3/8 npt threads and they flow enough fuel. use the mechanical pump and forget the electric ones