Im hoping i can get some better educated advise. I own a 1987 22' seafarer cuddy cabin for about 4 yrs.in salt water 100% of the time. Which i really like and happy with. It currently has a 1998 mercury 200xl 2 stroke. But i never needed to touch the engine it always started and ran great.Now i am starting to get some issues like hard starting, wont idle. If i were to need a engine replacement what would be the best way to go. Have my engine rebuilt or just find a newer replacement equivalent to what i have. Any and all advise will be greatly appreciated.