The Crank - Piston assembly is constructed from several parts from which the Crank Assy is the most expensive.
Some items from this specific schematic: Washer, Spring, Oil Seal (20x35x7-136), Pin, Crank, Piston Ring Set (std).
The twenty-eight Gt1 1973 1974 Usa Crank - Piston component parts are all listed in this schematic.