I bought mine from madracings concepts. Almost a knockoff of Arizen seats. $450 or so shipped for the pair, black leather, with cut outs. They feel really great and hug you also. Look great as well. I set a little tall on the tracks I have now, so I might just mount them directly to the floor where I need them. I can get some pics but here's a good article about them...
http://6litereaterdesigns.com/forum/...php?topic=34.0