hy i am Valentin from Romania i have a 1999 hayabusa with 15600 miles , small air box mod , kn filter , suspension raise kit , power commander , original headers modified to 1 exhaust from gsxr 1100 here are some pics with work in progres ... i used the original hayabusa seat it was longer than gsxr 750 and i liked it more this way , worked on the subframe of the gsxr 750 for 2 weeks to fit