We shall see, when final dimensions are known.
I do believe you that's what he said, and perhaps that was he was told but...
300mm = 11.8 inches
RIIIR wheelbase 66.7"
So... 54.9" wheelbase for R3.
That's 600 sportbike territory, so it's not right, it's just not.
The 168 -185 how thing, I suspect mama T I posting "more than" to allow wiggle room. There's a trend in the car industry lately to advertise actual wheel power instead of flywheel, who knows.
The engine size, sorry but it's bigger/bulkier. While the actual dimensions may be shorter and narrower, when scaling and laying the new bike over the old, it is definitely bulkier. Which makes sense, it must be longer internally to accommodate increased bore spacing for the larger pistons by about 1 inch.
That picture posted btw, only supports my estimates.
89" front of front tire to rear of rear tire.
89" - 12.7" (back wheel radius), - 13.2 (front wheel radius), = 63.1" wheelbase. 3.6" shorter than the current.