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  1. 87mercurygrandmarquis

    NEED INFO. are cat deletes and straight pipes legal in pennsylvania

    Hello. I recently got a hooptie 87 Mercury Grand Marquis GS with the 5.0-liter engine (the same engine in fox body mustang from that decade) and I wanted to do a cat delete and straight pipe it but I don't know if it's legal. Can you help me with the "issue"? thanks
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