I just got my hands on a supersprint x-pipe and resonator for a pretty good price; $610 shipped. Only had 10,000 miles on both, guy was selling because he did an S54 swap. I'm really excited to get these on and see how they sound with the Dinan muffler, I think it will sound fantastic. I'll keep you guys updated! X-pipe will bolt on, but I gotta get the resonator welded on. I know a guy who could probably do it for me though.