I use this bike almost exclusively in track days. To this purpose the increament was big!!! With full exhaust, dynojet and air filter I had a gain in power of 18%, and torque 25%, 26,71cv and 2.44Kgf.m respectively, 13 tooth front sprocket increased aceleration too.
Some decent improvements there!
I'd ditch the mirrors, fender, plate, and signals - and call it a track bike.