i just got my xterra 2003 s/c. is there a exhaust that you suggest. i want the best. please share also are there any headers for these X's?

Welcome to XOC Mike, obviously you're new here. Let me introduce you to the most powerful resource this board has to offer...
http://www.xterraownersclub.com/cgi-local/ultimatebb.cgi?ubb=search;search_forum=70

Use it wisely,
Brent

And you peanut gallery folks, don't bother. It really needed to be said, and I couldn't have been nicer about it.