For the 1964 300K, the convertible returned to Chrysler's letter series. The standard engine became a 413 Wedge with a single four-barrel, rated at 360 horsepower and shared with the Imperial. The cross-ram engine moved to the option list, and leather became optional. The color range grew to include Royal Ruby Metallic. You're looking at a 1964 Chrysler 300K coupe in Ruby Metallic, with an automatic gearbox.