does anyone have a sound clip for the calmini cat-back exhuast witht the 3.3L S/c xterra ...also does anyone have any comments about it pros and cons.

yes i'd be very interested in hearing too.

This LINK might give you a good idea. I know that its from magnaflow, but to be honest with you it doesn't sound too much different than the flowmaster 40 and 2.5 in piping i'm running. Although it is slightly quiter than my set up, sound is pretty similar