The Avenger GT, came in two models, the Avenger GT-12, and the Avenger GT-15. The GT-12, was designed to be assembled by the owner, using parts salvaged from other cars, most often, a Volkswagen Beetle. The GT-15, was similar, but utilized a tube frame chassis, designed to accept suspension and drivetrain components for a Chevrolet Corvair.
These cars had a big sister, known as the Fiberfab Valkyrie. The Valkyrie was styled similarly, with the most obvious difference being a somewhat shortened rear end on the body. Since the Corvair and the Beetle, where rear engined, the body needed to be a bit longer. The Valkryie, however, was designed to be powered by a mid-engined V8 engine.