I just purchased a 1989 17' bluefin with a 50hp Force that is in very good condition. I was just wondering what size motor I could put on it, the coast gaurd plate is completely faded and I can not find out the ratings on this forum or on the internet. I also thought I read in a different forum (or possibly here) that someone transplanted a force 85 powerhead into a 50hp motor, is this posible? Also what motors can I use my stock controls for? They are in good condition and I would rather not rip them out if I can avoid it.