ROK, I can't email or PM yuo, so here is my response to your Visitor Message
"i enjoyed reading your http://www.digitalsimple.com/C4S/08....t%20X-Pipe.htm site.
now may i ask your thoughts on eventual fitment and most importantly sound? any other issues that came up? i have the PSE on a c4s as well. i'm looking for louder and more aggressive without giving up pse.
thanks!"
Fitment is good. The sound is awesome IMO; you can read up about it here:
http://forums.rennlist.com/rennforum...e-install.html
No other issues. Just take your time and have your tools and patience ready.