If you are thinking of building a Caterham check out
The Caterham Project - Build Site for a 2004 Caterham DeDion SVT. It kept me entertained through the winter of 2006while I was waiting for my Caterham kit to be delivered, I used it a couple of times during the build when things were not clear in the book or not mentioned at all in the assembly guide. The build process is not difficult, ordinary hand tools are all that is needed other than a 41mm socket a a 200ft/lb torque wrench for the rear axles. Mike