Robert leMasters, Commander#115,and I both have the Nissan 6hp 4 stroke .
I have an alternator , vertical pull start cord and the power prop option .I strongly reccomend all these options.
The motor fits the well with room to spare .
According to my GPS , I see 6 knots easy .
I have the flushing plug option too.
I never leave the motor in the well and it fits nicely laying inside the lazzarette, along with 2 gas tanks .
My wife can install the motor in the well and she is only 112 lbs.
The motor is very quiet and there is no vibration like you would exspect from a single cylinder .