In the article to upgrade the fuel delivery system they took the stock sending unit and modified it with a 1/2" tube. Can this be purchased from anywhere? Is it possible to have the float mechanism on and functioning with a return line? Summit racing has a 1/2" sending unit that contains a return line. However no float unit and it is way too expensive IMO. I would like to find one that is a 1/2" and has a float for a decent price.