This is a simple bolt-on pusher fan designed for small jon boats. It uses a lightweight engine such as Predator 13 hp, Honda GX390, or Briggs 23 hp. Perfect for 1236 and 1436 jon boats with 1-2 passengers. Note due to the high center of gravity, these drives are designed for use in calm, shallow water. Visit www.banditairdrives.com for more info.