[ChilOut]

I also have the J2 cat back. I traded my stock for it a while back. I think I had about 400 mi on my car, the cat back had a few thousand. And all hardware was fine. It's loud during cold starts, but calms down once warmed up. The main thing that drew me to this exhaust was the quad tips, and the exhaust note. Fairly simple install, just don't tear the hangers. I forgot to do a weight comparison but there didn't seem to be any weight gain/lose over the stock system.