You need to call Paul Dixon @ Airboats Unlimited. His number is 229-246-5760 and you need to check out his website @ "www.airboatsunlimited.com" - he has it figured out. He puts a 35hp B&S on a 14' or 16' fiberglass AIRBOAT hull, not a jon boat. Not only does the boat look and perform like an airboat, you will have a two year warranty on the motor, a top of the line rig, and a company that you can contact, OR will actually call you back +++++ THEY STAND BEHIND THEIR PRODUCT!