Installed the Thermal R&D catback. What a great upgrade. System is well made and basically fell into place. I saw one comment about the kit being an "erector set". I'm not sure what is expected, there's 2 midpipes, a resonator, 2 connecting pipes, and 2 mufflers, and everything only fits one way. I'm not sure where to make it simpler.
Sound is great; I need to get some DPs but this is great for now. Noticeable that something is going on, but not overbearing and no drone at all. If you don't want one of the badass custom 3" set-ups like some of the members here have, this is definitely the way to go.