I recently bought a used boat so I do not know if this is the stock prop on it, ( I doubt it is ).<br />It is a 19 foot bowrider inboard/outboard with a 4.3 L Mercruiser. About 180 H.P.<br />Prop is an aluminum 14.5 x 17. We mainly intend to use the boat to pull skiers and tubes. I have tested...