The Chevrolet K20 was a variant of the 2nd Gen C/K that was introduced for the 1967 model year. The K10, which was a 3/4 ton, four wheel drive pickup truck, was offered with two inline six engines as well as V8 powerplants, which included small or big block options. These engines ranged from 155hp to 325hp in power, with drive sent to all four wheels through manual or automatic transmissions. The K20 was available in two bed configurations, with the sleek Fleetside bed, or the fendered Stepside bed being the two options. Notable trim offerings included the Cheyenne and CST (Custom Sport Truck). Production of the 2nd Gen Chevrolet K20 ended in 1972 with the introduction of the Third Generation Chevrolet C/K.