Good deal on Dougs headers thru Jan 28

http://www.autozone.com/autozone/parts/Dougs-Exhaust-Header/_/N-a033t?itemIdentifier=438122_0_0_

I don't see any place were it says ceramic coated, just says tubes are pre polished?

Edit: Ok never mind, I checked the Doug's website and the D453 is ceramic coated, and the D453-R is uncoated.