As a side note to the 22cent mod. I'm running the stock exhaust with tweety removed. I used the dremel to the core trick to get him outta there. It takes alot of patience getting the core out this way as you have to make the core smaller then it's original size to get it out of the hole. However I didn't have to do any mods to the end of the pipe this way which saved time, money, and kept the stock look of the pipe. I didn't want the frankenpipe look to the stocker. Just keep on twisting that core (in one direction) until it twists up small enough to get it out. Between that and the 22 cent mod you can have a better running bike that sounds and feels like a real thumper. If anybody's looking to do these things and has any questions let me know. I just did both of these last week so the process is still fresh my my head.