Unless you are running F/I with heavy boost, or nitrous oxide the stock plugs are more than sufficient. I don't buy all of the dyno results from most plug companies. If I were you (btrobertson) i'd wait till the stock plugs go at around 120K miles before replacing them. Take the money you'd use for the plugs, and put it towards some other mods. You'll probably feel like the money was better spent in the end
