I didn't, and don't intend to. That's your call.

 

As for a whole new system ... That's entirely up to you and if you have the cash to do it. I personally would replace everything at once so I know everything is new but that's a me thing ... I'm going to be doing a whole new system when I finally get the money to start my car ...

 

i got a cat back system off ebay for 176 shipped and it sounds nice came with everything took me twenty min to put on its real simple

 

I would just get a srt exhaust or r/t one if not new I would get a magnaflow.