I am looking for a 3/8" vapor return line for an A Body (71 Scamp) that I want to use as a fuel return line. Does anyone make one? I am installing a Sniper EFI and Holley want's both fuel & return lines to be 3/8". Finding the 3/8" fuel line is no problem and I was going to keep the old 5/16" vent as the vent.