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The Op didn't specify his model year, so we either have to assume....or dig deep and look at his profile page where he has his car listed as an '06.
So he would have the 2-piece design, unless someone changed them to a 1-piece aftermarket plug
Waaayyy too deep for me on a forum Anyways, Sorry OP you have the older style heads and unless the previous owner already swapped for a one-piece Champion plug, you should follow the TSB to a 'T' or risk breaking one or more plugs.