Thanks! I made it myself. I made a frame, skeleton, whatever you call it, our of 1/4" foam board, then covered it with fleece and fiberglass resin. If I did it again, i would use fiberglass cloth rather than fleece because the fleece ended up wit a texture that took many, many coats of resin and filling. I think fiberglass cloth would be smoother and stronger. The tank just covers the original steel tank and is bonded to it.
James "Houghmade" Hough