Instructions were on the back of an advertisement for Gibson. It did not explain where to mount the c clamps in relation to the joints. It described clamps by letters, but no letters were present, only numbers. I broke one c clamp over tightening because it wouldn't squeeze the pipe where I had the clamp. Really good fit and finish though. Great sound at start up and accelerating.
So far, so good! I was initially concerned about the db level that I would hear in the truck. The rpm range is limited for optimal rumble range for my Titan to be around 1500-2500. That is just what I was hoping for from my research. I really have not noticed any fuel rating increase as of yet. However, that is hard to judge due to the fact that I tend to stay in the rumble range when applicable.