Now that we are talking about the best mods, what about the worst?? so far I like everything I have done to my Brute but I used to have a banshee and had a big bore kit installed, **** thing never ran right again!! It seemed like when a guy finally got it tuned right, the altitude change from the driveway to the box of the truck was enough to throw it off, lol. I hated that quad when i finally sold it!!