If you're moving to northern Virginia (NoVA), try Auto Sportsystems Group (ASG) or Dulles International Motorsport. You should also check out our very active DiY scene...lots of great people that will lend you a hand when you tackle a project.
FYI - here's a link to the local forum for the NoVA/DC/MD area.
http://www.dorkiphus.com/porsche/