I have a 1972 Yamaha 360 RT2. When I was taking the motor apart there were metal peaces falling out of it and i cant find where they go. So I'm coming to the conclusion that the motor is toasted. I don't think it helps that is been siting for close to 12 years in a barn. And when it was park the guy i got it from said it was acting weird.. So I was wondering if anyone had a spear motor they would like to sell for a descent price and lives in Michigan. Or can I just put any kind / style of motor in it??? thanks for your help