Some of you guys may be jumping the gun here. If the fuel valve is located on top of the fuse, he may already have a robart fueler installed. It's black and tear dropped shaped. The byron fueler was 2 1/2 to 3 inch long rectangular contraption with a lever on top. The set up in your picture is a 20-24 oz. tank with a smaller header tank. Nothing wrong with that set up at all. Jack's soda bottle set-up works well too. Anyway, see what kind of fuel valve you have on top of your jet and let us know. You can see pictures of f-16 tank set-up in my gallery.

Jim