my dad finally gave me his old '83 yz-490. The last time this bike was ridden was by me around 10 years ago. Since it has set up and will need to be completely rebuilt. My problem is Im having trouble finding parts for the vintage bikes. Im looking for things like engine (top and bottom end) and trans rebuild kits. bearings and bushings, plastics, etc. does anyone know a good place to find parts for this old 2-stroke? thanks.