get rid of unless I have an equal Hp something or other to replace it with. The 15 or 9.9 Yamaha is just to heavy to move around. The Nissan 8 is perfect when bumped up to the 8.9. I've changed Yamaha's from 9.9 to 15 which is pretty simple but all you have to do the the Nissan 8 is change the jets. The 9.9 to 15 is the jets, the prop and the tuning tube or exhaust tube under the block. It's just 6 no. 10 bolts and two gaskets but people always just change to jets and prop. If you put the gas in the front end the exhaust needs to be able to get out the back. I suppose I'll run this thing until it self destructs. It's starting in that direction so it's just a matter of time.