I installed them in my 2012 Rubicon Unlimited 3.6. As long as you watch a video or two beforehand, you'll be fine. Along with Denso Iridium Plugs, Flashpaq, Superchip Ampd Throttle Booster and Hooker Blackheart Exhaust, my Jeep is incredibly fast, instant power and traction. I will continue to use MSD. If I were you I would spend the money and pair it with Denso spark plugs and gaskets. You can't go wrong.
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