I got a chance to buy a piece of Moto awesomeness. Tommorow I am going to go look at a 92 CR 500 in great shape(so I'm told, anyway). I am told that all that is needed is a top end rebuild. I know the guy and I trust him, and he runs a small repair shop and his guy checked it out. What is this bike worth? I know this is a hard to find bike, so I don't want to pass up on it.