I'm just about finished with my deuce roadster. I have a rolled fiberglass pan on the fiberglass body in hopes of one day having a quick change peeking out from under it. I used a Tanks, Inc 15 gallion tank that is available for $225.00 from Parr and a lot of other shops. It fits great behind the seat and still leaves a nice size trunk. I put a locking aluminum quick release gas filler on the deck behind the cockpit. I'd attached a picture or two if I knew how.