I don't know how long it was on the car or for how many KM but it's in good shape. The piping has a bit of surface rust but there are no holes or anything. The best is to see it in person.
I'm asking 400$ for a quick sale. I'm located near Montreal and would like to avoid shipping for now.
The part missing is in the box:
It's not the best quality and was done pretty quick but it gives an idea of the sound on my car:
http://www.youtube.com/watch?v=oOF0ODStnj0