Old muffler has rusted. I was able to remove the old muffler and exhaust pipe and install this new muffler. I needed a tool/angle grinder to cut through the existing clamps and clean up some connection points. I also bought a new exhaust pipe. Van is quiet and works well. Plug and play / work. Doing it yourself saved a lot of money back then. A few years later I'm still happy with the product and how it's holding up.