Where to find 79 YZ 250 parts (chain & sprockets)?

[Someone]

I just bought a 79 YZ 250 tonight. I knew it needed a new chain and sprockets. I looked on a couple sites for a chain/sprocket set and the dates don't go that far back for their online sales.

Can anyone recommend a place online that I can get these parts for an "old" bike?

Thanks.

 

[VintageDirt]

Speed and Sport

AMS

 

[Sawblade]

www.denniskirk.com