Hemi Mopar convertibles are extremely rare; the Muscle Car and Corvette Nationals gave them the red carpet treatment.
Automotive engineer Matt Brown, aka SuperfastMatt on YouTube, turned his Dodge Viper RT/10 into an unlikely all-terrain machine.
On AutoHunter, you can find this 1973 Ford Mustang Convertible, which is powered by a 302ci V8 paired with a three-speed automatic.
This Canadian 1964 Pontiac Strato-Chief listed for sale on ClassicCars.com features the correct Chevrolet 409 engine and a four-speed.