I happened to almost clamp my exhaust shut the other day descending backwards down a hill, so I was due for a new tailpipe. Me being me, I got an entire exhaust system. I went to Midas and they talked me into a custom catback system, 2.5" all the way back, custom bends. The Muffler that they used was a Raven wave chamber muffler. It has a very distinct low rumble during acceleration and is next to silent during cruise and idle. I love it. Got it all for $320. Just wanted to throw this out there for anyone looking for another system available for the Xterra. I'll put pics up as soon as I can.

Thanks for the info. Looking forward to the pics!!