Your boat is not rated for a 150 hp engine. If you add on parts to make it like the ESP, Bennington is not going to give you a new capacity plate to say it can handle a 150. If you put an engine on it that is over the rated cap. you might void your warranty and be liable if you an an accident for damages that your insurance might not cover and you might get some problems from the boat cops. Take good care of it so you can sell it for top dollar and save until you can buy a boat with a larger engine.