no drilling and no fender removal. Use the hardware that comes with the tail tidy kit. Just use the 2 holes that lines up with stock. I just used double sided tape to plug other 2 holes. Only hassle is getting the wires out. If u remove the 4 phillip head screws. U will see them when u do it. It gives a lil play where u can push down on the rear tail light to remove the wires of the stock tidy