Ok let me start another argument/discussion. I want to get rid of the header tanks in my PA-12. I have new tanks and I am thinking about the Cub Crafters STC to get rid of them. I know about the fuel line crossing the firewall but if I hit something so hard that I will rupture that fuel line I don`t think I would be around to worry about it. I know Atlee uses 2 header tanks in some 12`s but I really don`t want a header tank hanging behind the back seat either.