I couldn't seem to find a clear answer on this. This is my first 4t and I love it so far. My question is, I have to have a spark arrestor that meets 96 db for the series I race in. That being said, I ordered the fmf Q muffler for the 06/07, supposed to be here today, and I am leaving in the morning to go racing. Now my question, am I going to run into an issue with fitment to the stock header? Any insight is greatly appreciated.