I've actually heard that one of the single most advantageous aero-type mods you can do to a 1G Z is headlight covers.
Headlight covers WILL go on my Z, I'm still debating on if I should get tinted covers or just get some clear ones and paint them solid black from the inside.
The reason for the debate is that I'm getting one of 280Zone's fiberglass hoods next week, but, am painting it black (my car is red). So, I'm trying to picture in my mind what my red Z (with MSA aero kit) will look like with the sportier looking hood painted black and black headlight covers.