Satin. I did the polished route on the last truck, which was a DD and it was a PITA to keep them looking nice. My KB and JLP plenum are polished, so Im going to shine them up, along with all my caps, tanks, intake tube, etc. and seal them with Shine Seal when my build goes in. Hopefully, now that my truck isnt a DD, it wont be so bad keeping the underhood area nice. We'll see. I like show and go.