Realistically there is such a small gain with an exhaust swap on both the N/A and SRT models that looking for gains should not be the main selling point. Look at the Borla or Magnaflow cat back, they claim 4 HP and the Magnaflow is about 400.00 the Borla about 800.00.

You will see a 8-10 HP increase on a bone stock NA. Not huge numbers, but the exhaust is made to allow for growth and a true dual design.

A dual exhaust sounds much different then a single. The dual system will flow double of what the stock one does (dual 2.25" pipes).

If we eliminated the resonators, went with no name mufflers, mild steel, and no V-bands this could be an easy 550.00 exhaust. At that point though you are putting subpar products on a beautiful above par vehicle. The parts alone for our system run about 600.00, SS ain't cheap!