Picked up my 2006 WR450 last week. I ordered the Yamaha AIS removal kit and the GYT-R "performance wr muffler insert". The item the parts counter guy ordered for me was (p/n GYT-5TJ93-75-00). GYT-R muffler insert Is this the right part number for my 2006 450? Now that I look at the Yamaha web page I wonder if the parts guy ordered the right one. I notice the description on the Yamaha web page says '98 - '04 WRs and the muffler looks different. Thanks!