when I bought the 109, I suggested I would leave it alone, and not mod it. So, rad guard, heated grips, fuel controller, ventura rack, air horns, HID headlights, tacho relocate, license plate relocate, rear guard - shortened, PAIR valve removal, couple of bigass holley intakes, debaffled exhaust, debadged, Braided brake lines, ignition TRE. oops!. and 30,000 klm of fun later. It is my daily commuter as well as fun bike. Never say never. How have others gone?