I have an '83 or '84 KDX200 bottom end, that I would want $150 for, if you are still interested. No apparent damage and the drain-plug thread looks fine, although the drain bolt which looks OEM, is unusual in that it requires a 16mm spanner. No clutch, clutch cover, ignition, kickstarter, or primary gear. The crank seems ok , with no noticeable play.