I just had my flowmaster original 40 series installed on my 05 ram. Its a a single muffler 40 series splitting into two dual outs. When we removed the stock exuast it went in this order.... Huge muffler and then resonator near the end of the pipe. Is theres another resonator cus for all the drone and stuff that people talk about from the 40 series its actualy kinda quite and dosent growl until you gas it. its a 05 2rd long bed

 

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