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ww1flyingace gave a pretty good list in post #7, but he left off the HDI models, which I believe also sport cats as well as those intake/exhaust flaps/solenoids.
Got an '06 and no cats here. Still have the stock setup in the garage and double checked - nope, no cats. Also don't understand what an HDI model is OR the intake/exhaust flaps/solenoids. Maybe they come on the CA. models. Poor bastards.
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