Counter Rotating

[Ryank]

Hi just curiuous, I purchased a really strong running Johnson 225 for a good deal, dropped it on, Have not gotten her wet yet, But I realized the engine is a Counter Rotating motor. The prop is correct for the motos. Will this cause any problems? I wanted simplicity with the carbs and something I can work on, and got a good deal on a low hour motor. If I recall it wont make much difference? Also if the Lower unit goes bad Can I install a std rotater and prop and go that route?