Stock factory cats intact, this is a Marauder exhaust system with just the mufflers replaced. The exhaust is a 2 inch diameter H pipe which is the same as a stock P71, and then the marauder tail pipes which are 2.25 inches and exiting from the Megs 3 inch outlet tips. There is absolutely no drone, and inside of the car sounds almost no different than the stock exhaust did. I actually had no idea it sounded this good outside the car till I watched this video lol 

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