My wife's Barracuda runs the typical 3" #17793 Dynomax mufflers that came with the TTI X-pipe system.

The first pair lasted almost 10 years. Numerous short trips are what killed them in our case. (Just a street/strip car that makes LOTS of runs for ice cream with our 2 boys. The car is not driven or stored in wet conditions.)

The mufflers are supposed to have a lifetime warranty, but I had no luck with that. Dynomax said to go thru who I purchased them from. My inquiries fell on deaf ears at both ProMax Performance and TTI.

I ended up buying a replacement pair from Summit. I suppose I will wait a few years and warranty my original mufflers at that point.