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exhaust help

  1. Projects, mods, restoration
    I just got this thing, has a 318 in it with a smog pump but has empty cats. Is this going to cause issues or would it be fine to leave till i have time and money to replace the cats or remove the pump?
  2. New Challenger, 300, Magnum, Charger
    So I am getting an after market muffler but i don't know the size. Is it 2.25 or 2.5?
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