I'm getting a 2011 with 80,000 miles and I'm deciding to put new plugs in it. It has full exhaust and a SCT tuner on it. The headers are long tubes. I was wondering if I should buy NGK or Brisk spark plugs. If I do anything else it might be a ported intake and CAI. Just so you know just incase it means anything. This has 3.73's, and the rest is stock. I might do a convertor some time but who knows.