Chris...

I run a 12 gal cell in my car. It's perfect for sprint races but I wish it was a 15 gal for the enduros. Especially when it is a 2 hour.

I use a surge tank in mine and am very happy with the amount of fuel that I can pick up. As a result I only use a single Summit Racing 130 GPH pump regulated to 6psi. That, of course, is the weak link in my system. If that pump fails I'm done.