Hey Mike sounds like you're enjoying the new setup. I have a couple of questions since I'm also shopping for a new catback. Is there a huge difference from the 40 and 50 series muffler? I thought I was settled on the 50 but now I'm torn after looking at the 40 series. Also when you installed the pipes to the new muffler did you go w/ a press bent setup or mandrel bent? Can you post pics of the finished the installation? Thanks.