Hi folks, I had a vaporlock issue and would like to add a fuel return line. Problem is my car was.npt fitted with one from the factory. Seeing as my car is a 1971 modle and is equipped with the four corner fueltank vent system and fueltank to crankcase vent can I simply use the crankcase vent as a fuel return line? If so anything I should be aware of? If no how would I go abbout adding a fuel return system? Thanks again for the time and advice.