jtcb,
For starters, try this place on Boundary Road called NMontion.
N-MotionAuto.net
They tinted my previous car - a Mazda 5 GT. I know they do HID conversions, alarm installs, graphics, install mods, etc. They do both Japanese and European imports.
Also, in Richmond, try Bismarck collision on Minoru Road. They are more than just a body shop. They are a division of SR Auto Sports - they do a lot of racing conversions for mostly German marques. I've seen Bimmers, Benzes, Ferraris and even a Lambo Countach at their shop.
Good luck!