Cool, I was thowing the idea of doing that myself. I am curious to know if it drones on the highway.
What kind of piping?
I doubt you will get a performance gain, but you'll get a nice sound. It may help if you run the car to really high RPMS where it sometimes runs out of breath. Don't expect much and you won't be disappointed <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wink.gif" border="0" valign="absmiddle" alt='

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Maybe just get some mandrel bent tubing for $40 at a muffler shop?
Jeff