Have you guys seen thoes $280,000 RX-8's that Mazdaspeed has made? They're like complete carbon fiber race ready equipped with a 20B, Obviously this isn't the same topic, but it is realted.
I also found this interesting article about the RX-8 vs. 350Z http://www.roadandtrack.com/article.asp?section_id=39&article_id=1404