Hey guys, i was just wondering, im shoppping around for a shorty exhaust for my 03 r6. Im kinda liking the competition werkes gp exhaust, i was looking at their website and i noticed that there is a price difference between the 2003-2005 gp exhaust and the 2006 and higher gp exhaust. can someone please tell me why there is a price difference between these two. (2003-05 $329) (2006 and higher $189) Thanks guys.