I like the mid muffler, but in my experience (yes, actual experience) and a co worker with an 07, the mid muffler is not a bolt on kit, no matter what the manufacturer says. best to leave it to a muffler shop. my install was $150, that required alot of cutting, and fabbing of hangers to make it fit right, not touch, and not stick out too far from the bumper.
Other than that issue, the system is bad ass.