My structurally sound 1979 13' sport needs a motor. I've had no complaints with the 1985'ish model Mariner 30 that was on it. I thinks it weighs 120 lbs. The boat is rated for a 40 and I agree it would run like a champ, but I wander what a 190 lb Yamaha 40 2-stroke would do to the waterline. I could get a 25 4-stroke that weighs 155 lbs for the same price, but I'm concerned about power. I often run 3-5 miles out of Masonboro Inlet w/ fuel, buddies, and coolers so I need some power in reserve. <br /><br />Please respond if you have had a similar experience repowering this popular hull.