So I got ahold of a new Yoshimura RS3 slipon for really cheap. I actually love the way it sounds but id like to find a header to match up with it. Anyone have any suggestions on where to look for such header? I have a PCIII Usb but I plan on getting a custom map for it. I just want a better than OEM header first.

oh and I dont care if its new or used (as long as its in good shape and provides performance over stock)