The first generation Chevrolet C/K series was launched for the 1960 model year replacing the Chevrolet Task Force trucks. This new generation introduced a new body style of light pick-up truck that featured many firsts: a drop-center ladder frame, allowing the cab to sit lower, and independent front suspension. Also new for 1960 was a new designation system for trucks made by GM. Gone were the 3100, 3200, and 3600 designations for short 1/2, long 1/2 and 3/4-ton, as well as HD models. Instead, a new scheme assigned a 10, 20, or 30 for 1/2, 3/4, and 1-ton models. A "C" (conventional) in front of the series number designates 2-wheel rear drive while a "K" designates 4-wheel drive, although for 1960 and 1961, C and K trucks were badged as Apaches. The most common in the collector car world are the C10 trucks (two wheel drive, 1/2 ton, short bed) followed by the four-wheel drive version, the Chevrolet K10. Other common variants include the C20, C30, and K20. As is often the case with such popular models, the C/K has commonly been the basis for custom and restomod conversions . The first generation C/K was built until 1966 and was replaced by the 2nd Gen Chevrolet C/K for model year 1967.