1970 A Body Fuel Tanks

Drill a hole on the top of your filler tube like the older 68 69,70 are. Tap the hole. Make a nipple of a piece of brake line thread it. Some green Loctite. Be careful not to over tighten. Lube the small rubber hose and clamp it. Then connect to the steel vent line that runs on the side of the filler tube and vents out trunk floor like the 70 style.