According to the Chrysler Registry, 519 Dodge Coronet R/T convertibles were built to American specifications in the 1968 model year. These rare muscle cars were assembled in St. Louis, MO. Automatic transmissions were in 431 of the cars, while the remaining 88 were equipped with four-speed manual transmissions. Even more rare was the floor-mounted console between the bucket seats and the Rallye instrument package.
The standard engine was Chrysler's largest wedge-head V8, a 440 cubic-inch Magnum that develops 375 horsepower at 4,600 RPM. As an option for those wanting more horsepower, the 426 cubic-inch Hemi Stage II engine developing 425 horsepower at 5000 RPM was available.