Upper; consists of 2 upper side plate assemblies dwg. No. Cp482, 4 dowel pins 1 in. Dia. X 2 7/8 in. Lg., 4 socket head cap screws 0.750-10 unc-2a x 2 in. Lg., 4 lock spring hi-collar washers no. 3/4, 1 link dwg. No. Cp474-2, 2 bushings dwg. No. Cp475, 4 pins dwg. No. Cp485