Wow I expected to get a response or two but not this quick. Thank you very much Hoss and Mark. It looks like I have a new project on my hands. Luckily I like Yamahas. The bike I own now is a Yamaha TW200. I have an autographed picture of Sonny Shroyer sitting on a Yamaha dirt bike. Its from a move called The Devil and Max Devlin. Would it be hard to figure out what kind of Yamaha that was? I'm sure it would be older than 1981 but now I'm just curious.