I've been lurking this site for awhile now, researching a higher performance exhaust for my 2003 Xterra SE - S/C.

I ordered a Nissan Sport Muffler from my dealer thinking I was getting the Dynomax system but when I check out the Nissan Web Site they show a variable capacity muffler. Are there 2 different offerings from Nissan now?

I'm trying to get in touch with my local Nissan parts guy(the one I always do business with), but just my luck, he's off today. Great