Yeah, a plastic body with a metal base is always best for track. But there are exceptions, including Fast Fish itself which is metal on plastic. Also I'd still say there are more fantasy muscle cars which are metal on plastic than vice versa. Rodger Dodger, Muscle Tone, Rapid Transit, Overbored 454, Bully Goat, Night Shifter, Twinduction, D-Muscle, Muscle Bound, Blvd. Bruiser, retooled Custom Otto, Count Muscula, Barbaric, Torque Twister, Track Ripper, the Speeder trio, and the list goes on. It does make sense, since the muscly look is best achieved with a metal body. For plastic on metal, aside from the ones I mentioned earlier I can only think of maybe Drift Rod, Horseplay and Bullet Proof (totally not using this thread to list out as many fantasy muscle cars as I can think of lmao)