I'm looking to buy an aftermarket exhaust, but I have an '06 and would like to keep my o2 sensor. Can someone tell me what exhausts come with an o2 sensor bung built in so I dont have to drill a hole in a brand new exhaust. The only two I know of already are twobros and akrapovic.
Thanks

 

Yosh RS-3 has the 02 bung (huh huh he said bung) and easily removable baffle.