My first jetboat had a healthy 396 with a Panther pump. As far as a good all around lake boat i loved it. Ran mid 60's and was very reliable, very user friendly but not really any performance upgrades for it. So when i wanted to go faster (more horsepower) had to cut it out and glass in AT-309(berkely style) pump. Panther has a small imput shaft and bearings and bends with about 400 or more ponies. So as a lake boat its great but if you want to go fast look into something else.