[HydroJim]

aluminum would work. cost wise, that depends on you. I think it would be hard to make it look very good. I'd say look around the forum for fiberglassing tips. It takes a lot of work to make it look good, but it's worth the time.

This is all if you want the tail to be sealed. if you just leave the original car pieces in place, you can make your tail out of coroplast similar to mine.