Easy to install on my new sound box. I installed a 2002 Chevrolet Cavalier. My original muffler had an extension that I forgot so I had to run to the hardware store to get a short pipe to extend the end of the muffler outside the body. Otherwise it's a really easy install, you just need a U-clip between the resonator assembly and the muffler. It's quiet and sounds great. It's actually a bit smaller than my stock muffler, which is a good thing because my original muffler hung pretty low and was badly dented on the Pennsylvania roads. This is a little higher from the street.