Totally a custom spec built out boat. Engine replacement was a new drop in and many upgrades have been configured. This is a special jet drive boat that goes incredibly fast. Horsepower has been tweaked. If you are interested contact, your broker to get to a 3-way conversation about the many changes and updates that have been made. Seller is in his late 70's and still plays with fast moving toys but his ability to be on the water along with his love for this jet drive boat has had to take a back seat.