I'm about to put my fuel system together and need to know whether I need a regulator with a return line. The car is a '71 Duster with a 360/414 smallblock stroker, (460hp/511 torque), 800 dp holley, air gap, Mopar ported iron heads, Comp 242/250@.050, .558/.573 cam,TTI headers, 2.5 exhaust...