I believe it was due to fitment issues. You will see alot of discussion here where people had a hard time lining them up. They were even sending new kits to some people. They sent me new rear pipes with a modified hanger to try out. My driver side tail pipe is not in line with the bumper. The sound is amazing though. I just need to crawl under there and replace the rear pipes to see if it resolves it. If not I will take it to my exhaust shop and have him make whatever modifications to have it stay in place.
I love it. You may still have luck finding it from third party retailers. Or keep an eye on the buy/sell section here. A few have popped up.That is too bad. It looks and sounds great.