I want to know if I should buy 2 Kawasaki 650sx stand up jet skis for $350. They are years 87 and 89 and they both don't run. The one has many things parted out but the other is pretty much intact. I want to use both skis and make one good running ski. Both motors need rebuilds so I will have to purchase a top end kit for around $250. The dude says its just the cyclinders but im worried the cylinder walls are damaged or the crank to. Please provide any insight. Worth it or Not?