Lasted 15 years as part of my cat back system on my 2002 Dakota 5.9V-8 Quad Cab 4x4. Replaced with a better (and cheaper) option: Jones Exhaust Full Boar Round Super Duty SD718-6B Muffler. Exactly the same, but the insides are looser.
Pros
PREMIUM FEATURES -- Large flow tubes improve exhaust flow and reduce back pressure