http://mcsorley.net/locost A personal favorite! Totally professional site, and an owner dedicated to the advancement of so many builds around North America. A darned fine designer as well. Jim was a big part of the birth of our company.
http://members.rogers.com/7builder Another personal favorite, he is Canadian after all! He has a beautiful mine and a pretty great personality to boot. Tons of great technical data on his site.
www.kitcarlinks.com This is like the Yellow pages of kit cars. If you want to see the other options in the kit car world, you will find them here.
Click to join Locost_North_America
This one will take you to a wealth of knowledge with a very healthy dose of personal opinion. Lots of members too to make sure no one gets too far off track.