JohnnyB the 93 Fatboy USA model came with 65 teeth rear pully and that year model was a little slower due to the gear. My 92 Fatboy came with 70 teeth which gave it a better top end and mileage,I installed a fireball cam,upgraded the modulator,super trapp 2 into 1,rejetted the stock carb and the thing flys now for a Harley that is but the gas mileage went from 45mpg to 29/30mpg.If you change the rear pulley to 70 teeth you'll see the differnce a rear belt will also have to be changed too.As for the Hayabusa it has everything I need in a fast tourer plus you get between 35 to 45mpg while going fast too,I had a 89 Gxser 1100,a 98TL1000R and the Hayabusa is hands down the bike to ride for comfort.I also like the other bikes made by Honda,Kawa and Yamaha and the only reasons I bought the Hayabusa was the new look,the RWHorse power,and the price was right.This is a keeper.The Harley has good resale value but do you buy a bike to ride or resell.See Ya