I'm an inexperienced boat owner who is learning fast (the hard way) and needing to repower a 1989 Cruise Craft Charger. She's a 1989 glass hull bowrider weighing around 462kg (1020lb), 5.06m (16'7") long, a max beam of 2.21m (7'3") and in the day rated 90 to 150 hp. Transom, stringers and floor...