You got one? I think they would have a tough time being fast enough. They ran with the 600s not the 1000s the one time they really ran. I don't think you can make enough HP out of an AC HD engine to run the TT. The Senior and F1 TT, the only place for these bikes at this time, feature long stretches of over 150 mph with 200 mph touched at one point. The average lap speed is over 130 mph. I don't think these engines can pull that.