The archive of the forum is somewhere but its not in anybody's hands that will be of any use to us. The registrar of 323performance isn't into the scene anymore and can't be got ahold of, and I'm not sure if the one copy of the archives is readily accessible anymore.
It was a good forum but a lot of the info was compiled from the web, and from the Yahoo GTX boards - Most of the info is among our members here. We have a pretty incredible resource just in the members of this forum here