I would very much appreciate it if someone could help me! i spent alot of money on rebuilding this bike, and it turns out theres a 14 hair-line crack along the inside of the crankcase. So basically this motor is toast unfortunatly.On the other hand i just got a 2000 KDX 200 and would love too use my piston and rings, as well as wrist pin and bearing, from my older bike to put on my new bike. The parts are brand new and the question is will they fit from a 1989 kdx 200 to a 2000 kdx 200. THANKS EVERYONE AND ANYONE