Factory AC. I rebuilt the evap housing when I did the interior. Got the last (so they say) evap from Classic in Tampa when I did it. A friend of a friend told me I could have all the under pieces he had a while back. I never took him up on it, mainly becasue I just havent seen him since. Summer is comming, and that's one of the last few things I need to do. I need every thing under the hood except the water valve.