I'd be embarrassed to show the present 'Cuda setup..... it is incomplete, and is what the PO had for his stroker, pretty much 5/16" stern to stem. But it has a solid pump (Carter mechanical Super Strip type) that will flow 400-500-600 HP worth of fuel from 2500-6500 RPM, at 4-5 psi.) Eventually, it'll be 5/16" at tank pickup and the few feet from mech pump to carb, and 3/8" tank to pump input on the long run when it gets done. Engine is a 375-400 HP 340, so nothing outrageous.