I just bought a '05 450r, completely stock. I want to add some performance mods. I was wondering what you guys recommend starting with to get the most bang for my buck. I was thinking along the lines of a new pipe or maybe a whole new exhaust system all together, a K&N air filter, and a jet kit/ignition module kit. I also would like to get some nerf bars for it. I was leaning towards the Pro Armor XC. Any suggestions would be awesome.