RockAuto and get the TYC brand. I've done this buying replacement headlight pairs for my Regal plus fogs, two Grand Prixs, fogs for my Dodge Magnum. Even with shipping you won't find it cheaper here, things are just too inexpensive in America.
Have you had any experience or seen a difference between the CAPA Certified and the regular inventory that Rock auto has.
Reason i ask as body shop replaced a set of 2000 chevy truck lamps and they look to be the same as gm lamps to the point where you can get the lights set for the low but not the high or high and not the low.