2006 Mercury 115 Four Stroke
Looking into it further, an 06 optimax 2 stroke dry weight is at 375. Then I would also have to mount up the tank and such for the oil injection.
I will have to pick the brain of the dealership to find out if adding the 80lbs, or better, to my transom is going to effect it or not.
I'm a four-stoke fan, there is a difference on lower-end though while mid range and top-end are great.