hello, i have a 1956 18' "whirlwind", this boat is made of laminated and formed mahoghony,it weighs 220 lbs. it is powered by a 1965 johnson 75. the engine is greatb ut needless to say it's a bit much. please send any recommendations on a more suitable engine and any ideas appraising the '65 johnson. thank you for any help. <br />flote