67 / 68 Mustang Coupe to Fastback Conversion Kit Champion Classics, Inc., built the Wolverine Supercar, www.wolverinecar.com, and as a result of building the molds for that limited number production supercar, we had devised a kit to turn a 67 - 68 coupe into a fastback. Our kit is unique in that it is composed of one piece.. Coupetofastback.com~Site InfoWhoisTrace RouteRBL Check