Got my 07 XC70 a month or so ago and just went underneath and noticed the rust on the muffler (I think its the muffler, someone can confirm that). Not very knowledgeable or experienced with cars and wondering if this is something I should be concerned with or not. The options I have in mind...

Any suggestions on what muffler would sound best on an 07 S80 V8. I want to uncork the exhaust a bit but nothing too loud. Don't want the drone from straight piping it so I'm planning to just replace the mufflers. I'm leaning between Borla or Magnaflow but any suggestions would be appreciated.

Selling my Magnaflow 12265 muffler. the muffler has only around 2000 miles on it and no issues. Im selling either the muffler exclusively or the muffler with the end pipes and 3inch exhaust tips. Please note this muffler will need to be welded to the stock exhaust as a replacement for the stock...