MY FATHER HAS HAD THIS MOTOR ON A 89 18'9" NITRO SINCE IT WAS NEW. THIS COMBO HAS ALWAYS HAD (SERIOUS)PROBLEMS GETTING OUT OF THE HOLE. THE BOAT & MOTER HAUL BUTT WHEN UP ON PLANE TO APPROX. 5,500 RPM. FROM DEAD STOP TO FULL THROTTLE RPM GOES TO APPROX. 3,000 RPM AND THE BOW POINTS TO THE SKY...