hey fellas just wanted to drop a line for all of you concidering an aftermarket exhaust ,dont buy a two brothers exhaust im not going to go into detail but click over to teryxhq.com to see my post (beware of two brothers exhaust).they are totally a piss poor design with miltiple problems and they wont fix it or refund your money my local dealer (stiller motorsports 724-545-1070) refunded my money.thank god so many others were not so lucky i have narrowed it down to the muzzy or the hmf swanp series they both dynoed well at hunterworks.just waitint to hear the mizzy thamks for your time or input.