I'm assuming you're in the USA. There is a Suzuki dealer in Alliance, Ohio that has a large inventory of motorcycle parts from ages ago. My dad needed a part for his '86 Cavalcade and they had it. Really old looking box so it had been on the shelf a long time. This dealer also buys old bikes and parts them out so if he doesn't have NOS he may have one used. The name of the place is Action Sport Cycle. If that doesn't work then try a web search for motorcycle recyclers/junkyards. Lots of them out there. Good luck.