Audifans.com - A great rescource of parts suppliers, and the home of the famous Quattro List all Audi mailing list.
Jim Green's 90tq - Another project simmilar to mine, and another great place for information on modifying the I-5 engine.
Black Forest Racing - Home of my Porsche race team.
Black Forest Pics - A huge archive of pictures from arround the shop.
MegaSquirt - The fuel injection system as used on my 5000tq project.
Not2Fast - Eric Fahlgrens website. No ammount of words can begin to describe the amazing rescources found here!.