I have a 15 gal Fuel Safe with their steel can that came with the previous car. It has a red rotomolded bladder and the black plastic surge tank collector with the 3 check ball valves. The return line from the carb dumps directly into this tank. I have come off the track with as little as 1 gal. left in the tank measured by an aluminum dip stick I use to check consumption which is about 5-6 mpg. I use one Facet pump, a Canton 4" filter, -6 feed and -4 return lines.

Now if I could only remember to keep gas in it I'd be OK.