I am changing out all my fuel lines from engine bay to tank. I also put in a fuel cell that I have welded some fittings on for the fuel lines. I have a hole on top because I need some kind of breather but how would someone suggest I do the breather? AS it was on the car it ran down to some sort of valve with some lines on it.(check valve?) Anybody have a link or pic to about making your own fuel system.