Iam shopping for new motor. repowering 1989 17 ft. bluefin aluminum v.Boat has a 90 hp capacity. It has a 80 merc. on now. I want a new 90 hp. Tramson looks good in and out. I want to keep the weight down one of several reasons I would like to stay 2 stroke. Found a new yamaha 90 with carbs ARE...