5/16" Fuel Pump Inlet for 340?

Just my two cents- I am doing a 360 into a 70 dart, the usual carb/intake/mild cam/headers, 3.55 gears/auto. Use will be car show/cruise stuff. My thinking was as long as I have the entire car disassembled, I would replace the original s6 5/16 fuel line to a 3/8 line (more fuel volume in a 3/8 line) and tank pickup, with a HP Carter mechanical pump. If needed later, an electric pump could be added. More a "want" than a "need" maybe, but I "justified" the expense to myself! "Back in the day" I do remember my mildly modified 340 Duster (stock fuel pump) running out of fuel at higher rpm until I added an electric pump that solved the problem.