[GVS]

I second TexasSnake: looks like an NAF car to me. NAF installed a plate in the engine bay with their information. They used a Mustang II from suspension & brakes, and a 4-link rear suspension with Ford 8" rear axle with drum brakes. A 9" rear axle was an upgrade. Most were equipped iwth a 302ci and Borg-Warner T-5 5-speed (this was prior to Tremec buying this design in the 1990s). These were assembled in Arizona by NAF (rather than an owner-assembled kit).

Pictures of the chassis would help.