I bashed my stock header in from a crash, and I want to replace it with an aftermarket unit. I've done a search, but I'm not really sure what the best system may be for my WR. I'm not terribly concerned about noise, I want to keep the bike's performance but it would be nice it if it were quieter than my uncorked stock unit. I've been looking at the Pro Circuit T-4 tuneable system, can anyone let me know what you think of this system? Also, if you have had success with another system, please let me know. Thanks to everyone for your help!