I'm looking for a 49.5mm piston kit (gaskets and top bearing) for a 1986 YZ80. Or a 50mm, if that's what you have but I don't want to bore it because I am trying to do this real, real cheap. Anyone happen to have one lying (laying?) around? Also, the bottom of the cylinder head is kind of beat up, but since I got the bike for real cheap I kind of don't care. It's going to be a play bike that gets the daylights beat out of it, so should I care? It was beat up by debris, I think, then run so everything is real smooth (just pitted and a little scarred). Last question, anything that I should do for performance that is free? No base gasket, modify the ports, etc?
