Parts such as the Muffler: Clamp, Cover,muffler, Bolt 8x40, Clamp,muffler Cover are included in the Gs450ga 1983 (d) Usa (e03) Muffler parts fiche.
Check out any of the fourteen Muffler components enlisted.
The most reasonably priced component used on the Gs450ga 1983 (d) Usa (e03) Muffler is the Lock Washer.