I did nearly the exact same thing as Xnke, I used a section of 3", a whole 180 and part or another. My car is turbocharged, but the summit muffler is great. Cheap and quiet, I noticed no change in the car swapping to a straight through muffler(afr, boost response, etc), the turbo muffler went back on shortly after.
You can actually hear my car from a fair ways off, but it's a low growl and not an annoying raspy sound, it's the type of sound that doesn't attract much attention of the law enforcement type. The look of a (really big ) stock muffler probably helps too.