I had the pleasure of owning and riding the h2 it surged really bad at certain throttle openings and vibrated pretty bad.but when you got on it hard guarenteed wheelie 1st and when shifting into 2nd too every time.It out accelerated my brothers z1 900 also my friends 1979 suzuki gs 1000. the great thing was they were back there chokeing on the burning 2 cycle oil smoke. the magazines at the time never told anyone buying a kz 1000 or GS 1000 that the old H2 WAS QUICKER .AFTER I BOUGHT DENCO CHAMBERS IT WAS EVEN FASTER.