NO, you don't have to convert the motor to ss. You will have to find a long shaft pump and the easiest thing to do is have a riser built to raise the motor the necessary height.

Rough est. ss with pump you need a 22" transom.

ls with pump you need about a 27" transom.


Send me a pm if you would like to discuss this.


Also, wt of a 25 hp is closer to 125 lbs and should push a 13' pretty good as long as the boat is not full of extras that you don't need.

Giz...