My truck had a very restrictive y-pipe. So I picked up a JBA y-pipe (only company that makes one) and cat-back. JBA sent a Magnaflow muffler with the kit. My plan was to install everything myself but nothing lined up or fit. So I went to a muffshop and had them do the install. Easy for them since they have the tools. If I were to do it again I'd just have a shop build something for me. That would have been much cheaper. I couldn't see spending the big bucks on a Borla/Bassani/Expensive**** cat-back. You aren't going to get the gains like we did with the Cobra so a replacement muffler, resonator removal (if you have one) and a decent tip is really all you need. Save the left over dough for