Hey Guys I was reading this post and the reference to the X11 Z28 and found this on the CRG site. The post is old, goes back to 2007. I was wondering about this myself until I read the post.
http://www.camaros.org/forum/index.php?topic=1699.0;all
Note: I thought I could copy and paste the link to here but I'm new and must be doing it wrong. You all know what to do though to read it anyway.