Basically what I did. Had a local shop install an 18" Magnaflow, with piping + labor, $550.You know you can just get a Magnaflow muffler without buying a complete cat back system. Many shops could just cut out the stock muffler and add a compatible aftermarket muffler. You wont gain anything noticeable (power) without headers and a tune anyway. If it's just sound you are after, go this route and it's cheaper.