The component with the lowest price in the CYLINDER HEAD/CYLINDER ('74-'75 schematic is the Nut,8mm.
The fifteen G5b 1974 Canada Cylinder Head/cylinder ('74-'75 component parts are all listed in this schematic.
Some items from this specific schematic: Holder-exhaust Pipe, Collar,exhaust Pipe H, Damper, Washer-spring,6mm.