Ford Mustang GT Cobra Jet Convertible
The legendary 428 Cobra Jet was introduced in 1968 and Ford immediately put it in the Mustang. The Mustang 428 CJ was a mid-year introduction intended for drag racing, so it sold in modest numbers (via Motor Trend).
Besides 50 Fastbacks with CJ engines and other versions, Ford offered the Cobra Jet in convertible form. Only 34 cars were made, which makes them one of the rarest Cobra Jet models ever produced.