Ok, I have a few questions hoping to get some insight... I am currently trying to help a buddy get his pontoon boat up and running, I dont know alot about the engine yet, but he has told me it is "locked up" or "seized up". I know it depends on hp, and some other factors, I know there is what is called short shaft and long shaft, but I am just trying to get some ideas if this thing is worth even trying to mess with... If so, approx how much to have it rebuilt/overhauled. could it only be a certain part of it that needs to be redone, I have seen/heard where it could be the upper or lower. I am not boat engine savvy and want to possibly learn but dont want to half "butt" anything either. I really just want to get out on the water and catch some fish, and some big fish at that!