Part #: 66941BKU. Proform 66941RC HEI Distributor - Red Cap For 1955-1982 Chevy V8 Engines. Proform 696502 Slim-Fit Crossflow Radiator System, Single Fan For GM Small Block. Proform 69682-2 Slim-Fit Downflow Radiator System - Single Fan For Ford Mustang.