Re: Swap 05 GC Headlights for newest GC Headlights w/ Halo Projectors
scott has a thread here somewhere.
you can get the 08+ HID OEM headlamps, you will also need a 08+ bumper, grill, and bumper support.
if you were to buy it all new from a stealer, you are looking at 1500 or more. the lights alone are ~700 for the set.
if you can find salvage, you could save some dough.