I have a 24x36 I got from my dealer, and a 24x36 from DUB magazine that I got from eBay. The DUB poster is a graphite xfire with custom wheels, autographed by Candice Michelle (she's standing next to the car). There are pics of all my xfire stuff in my album.
I also have an 18x24 of the 2001 concept xfire, that I got from eBay as well. Just keep an eye on eBay; there's always something of interest for xfire lovers.