The Nut,8mm is the cheapest item from this partsfiche.
The Damper is the most widely applied product in the G3SS 1969 USA CANADA CYLINDER HEAD/CYLINDER ('74-'75) ( eight times ).
Some items from this specific schematic: Damper, B8hc (ngk Sparkplug), Washer-plain-small,8m, Gasket,exhaust Pipe (nas).