I would add Goodies Speed Shop to the list. They do everything from engine builds, to suspensions build to full-on car builds. The Goodies crew is building a ground up pro-tour 69 Camaro that is parked in the showroom right now. Good, knowledge folks. They are located in San Jose. Here is their web site:
http://www.goodies-speedshop.com/2007/index.html
Chris