You can get them from Evo-r but the Z store had them in stock when I ordered mine. They are great quality, the CF backing is actually pretty strong so it won't flop around or cave into the front bumper indentation.
When you install them however there are these "rivets" behind the stock emblems on the bumper that hold them in place that I just gound down with my dremel. But no fading and still solid. Great product
http://www.thezstore.com/page/TZS/CTGY/370z03b