My aluminum fuel tanks have small fittings for the pick-up tube. I think they are 1/4NPT pipe that scews into the tanks. This is not going to cut it for my EFI blower project. So I decided to make new pick ups and tubes. This will also include a vent. I do not like the way my caps "vent". These spun alum. tanks are really thin so the matrial I am using I am trying to keep on the thin side so I am using .090 6061. You tig welders out there know what I am talking about. I have yet to get the tube and the pipe bungs (vent) for the project. I am using -12AN bungs for the feed. I was going to use -10AN but I only had one and not two. I know this might be over-kill but that is the way I am.