We have had two Grand Prixs with this option and the Z06's have them too, anybody know if you can buy these universally to install to any car? I would love one in the RS.

it would probably need to be a custom thing, if your good with electronics you could do it yourself. Reason something universal wouldnt work is because a little projector box atleast an inch or two thick would obscure the drivers view on a third gen to much, and then it wouldnt be able to project into the correct postion on a third gens windshield. Your only option is a hole cut into the dash so its sunken in like a real hud.

Here's a topic over @ LS1Tech.