Back in 1972 while in the USN in Norfolk, Va. I bought a new Kawasaki H2 750 triple which at that time was touted as the fastest stock bike on the road. I immediately had the engine balanced and blue printed, ported and polished and installed a set of Bill Werges tuned expansion pipes. The bike ran like a raped ape and was scary as can be but only in a straight line. It was terrible on curves and for any real road riding, just fast.
Fast forward to around 6 years ago and my younger brother bought a new Suzuki Hyabusa he let me take for a blast. WOW is all I can say. My Kawasaki was quick but nothing in comparison to the monster Busa. 150 MPH was a very easy speed to hit and there was plenty left but not by me. Certainly not Half Fast IMO but then a buddy took me for a drive in his Porsche 911 Turbo and scared me even worse hitting over 170. I am much happier on a TW doing 50 these days.