my t.bird is a real smoothy compared to the bonnie .ok so its down on hp but mine breaths through a 32mm amal using e3134 cams lightened valve gear ,gas flowed head ,nikasil lined alloy barrel,titanium gudgion pins and electronic ignition.the transmition boasts belt drive with alloy clutch drum, srm alloy pressure plate ,hydraulically opperated ,and 3/4" final drive chain.other goodys include morgo rotary oil pump, cartridge filter and alloy front caliper.she is good for about 115mph and is light and aggile compared to other 650+ classics and after 23 years of ownership im still as smitten as the day i bought her