This tank is about the size of a 2X4 I think if you waxed the board up and then put a coat of fiberglass over the thing with one end open, blow air in next to the board when set up, that should pop the thing out. Then glass up the end and hang on the bike. You can put the bungs on as you glass it up. I would use one of the brass garden hose ends for the filler, they make a cover for the end to stop water for a cap. And a brass 1/4 pipe union for the outlet. You can use plaster to make some neat shapes if you want something more in curves. Have fun, Dave