I just got my first KDX, a 2000 KDX 220. It came with a Pro Circuit pipe and Factory 304 silencer, No spark arrestor. I wanted to trade for a stock arrestor/ silencer as I need spark arrestor for where I ride. I have people waiting to do this with me but... a friend said I was nuts to trade a lighter and more free flowwing performance silencer for the stocker. He thought I could get a spark arrestor insert fot the PC. I tried to e-mail PC but their mail box was full. Anybody have any ideas? Does PC offer this option? I need the spark arrestor stamp to be legal.I would like to do a trade ASAP as I am leaving to ride where I need the legal deal soon. Thanks