Read this if you're wanting to mod at all. It'll save a lot of headaches.
http://www.grandprixforums.net/safely-modding-your-3800-powered-car-17482.html
If you go to any article on wikipedia, and click the first link in each article, (not including italicized and brackets), it will eventually take you back to the word philosophy.
If you do this Doc, I've got some tools that I'd be willing to let stay there for people to use. Nothing incredibly fancy but some basic stuff like timing lights, compression testers, and some hand tools.