I saw the coolest thing in i think it was cycle world, on an o3 r1. I think it looked way better that the 04 exhaust. It was a kit that routed the exhaust out where the brake light is supposed to be, and came with undertail and new led brake light that mounted under that. It was sick, almost like a stealth. It actually took off weight ( i think it said 7 lbs) and added horsepower. I will find the article and post more about it if anyone is interested. What are everyone else's thoughts on this?