FWIW - I just installed the Walker 55054 Quiet-Flow Stainless Steel Muffler Assembly. Rusty bolts were encountered, expected and conquered by a cut-off wheel and or a drill bit. It appears the factory bracket by the cat had nuts factory welded onto it. It was so hard to tell what I was looking at with the rust. I wish I would have tried to remove the bolts with an impact before I got carried away with the cut-off wheel, oh well. Like others have said in other threads I also had to use two gaskets in the rear. I ended up using a Walker one and another one made in India which had a much smaller OD (same part number on the package) and it fit nice into the shallow counter-bore shape that the rear tailpipe has. Why did I have two different sized gaskets?...ask Amazon. I wasn't very happy when I seen the variety of gaskets that I received but it all worked out for the best.
As far as sound, I like it. I would say it is just the slightest amount throatier than stock but not at all loud. Believe me, I hate loud exhaust on anything but a cammed up V8. The best news is I am no longer annoyed while driving past buildings on my passenger side with my windows down. The seam was completely rotted out of my OEM one and it sounded like crap driving alongside buildings or a low speed bridge with a feature that would cause the noise caused by the bad seam to bounce back.