Just to give some other background info, look for an old thread about HID Kits and how I was talking about what really counts for this.
And to give another incentive here is a write up for a projector build for a 2nd Gen Camaro.
The builder put a lot into researching how to do it right and how to pick the right parts. I can make contact if this is a real serious build you plan.
http://www.ultm8z.com/HID%20Projecto... 20Camaro.pdf