sentences:  Using a longer hood, the C/M-series trucks were designed to accommodate larger diesel engines, such as the Cummins NH and Cummins V903, and the Detroit Diesel 8V71.The center-hinged "butterfly" hood of the H/J-series was replaced on the C/M by a front-hinged fiberglass hood.Following the introduction of the medium-duty C/K in 1973, the 112-inch BBC truck was consolidated to the M-Series.