Fan assisted air cooled. Mine wouldn't reach 100km/h unless I drove it off a tall building. Only problem with that is it doesn't have air brakes.
I know the superbike position you speak of. I used to do that all the time, and throw my feet back on the passenger foot holds. My bent back lined up perfectly with the top of the trunk, making for a flawlessly aerodynamic scooter. I may have squeezed an extra 1 or 2 km/h of speed out of her doing that. I only did it when it was dark out though, because I look like a clown.
Today I was able to adopt a genuine superbike position on an '07 Ninja 636, while on a 150 km round trip through the beautiful country roads of the Okanagan valley. MY GOD ITS FAST!!!!! 0 - 100 and quarter mile times are virtually neck in neck with my old 749 Duc. It screams a lot more than the Duc though, and it gets its power closer to 10K as opposed to the Italian which was shifting at that point. It was a great scenic ride, and I wish it never ended. I spent the first 70 km or so on an earlier 90's Ninja 250 (I went with a friend that owns both bikes). Riding positions between the two bikes were day and night. With the baby Ninja you could open the living crap out of the throttle and wait patiently to go somewhere, whereas the 636 exploded with torque and took off like a spastic house cat. Awesome experience! Man I love bikes.