I was going to get that exhaust off of ebay but I couldn't find a sound clip or a pic of the actual product at the time.. So, I bought a Gmpp touring set up off of Red07SSNA. I love it but I guess I would not have been disappointed if I would have bought the tsudo. Sounds great!
Sounds pretty good, all the Cobalt exhausts sound about the same though. There are just some small differences in tone and frequency between them but basically you can tell it's a Cobalt even if you don't know which system it has on it.
I got the Pacesetter exhaust with a high flow cat. It sounds about the same, but louder. I would recommend installing a high flow cat. You will have to run a O2 extension so your CEL want come on, unless you have your computer reflashed. But you will hear a difference, and gain more power.
I bought the Performance GM cat-back and have had it for about 3 so it has melt a bit, it sounds great, nice deep tone not like those squeeky ricers, let someone drive your car and listen to it from the outside, you'll fall in love lol