im in the process of giving it a shot. i made a template out of thick cardboard. then cut enough templates out to glue them all together. now im going to sand it down to get the curves and make it a little smaller. then wrap it in fiberglass. sand then cover in polyester filler to get the final shape. its for a prewar schwinn hanging tank so being one piece will work fine. now i know its not going to be an exact replica but i think i can pull it off. i just about have the cardboard form made and its actually looking good. has anyone tried to make a replica tank and if so how did you do it. thanks