If the factory NR outboard has a 14.5 mm crank as I believe they do,the pto housing would have to be reduced in diameter to fit a 14 mm case. I don't have a micrometer handy, but measuring with a digital very near caliper,the back plate from my 14.5mm 35+ is roughly a bit over 1 mm larger in diameter than the back plate from my 5 port, and can't be interchanged. Tim, I have a complete lights conversion in an RB concept C6 on my Vision. The engine has about a gallon and a half of fuel through it., I can pull the conversion parts out and send them your way if you are interested, then you will have the pto you need plus a spare crank and flywheel. pm me and we can work out the details.
Larry