About 3-6 months ago. I prefer the durablack coating but the new ones are just as good. You are gonna love it. congrats. You should start it up with just the mufflers on before you put the tailpipes on it. just to hear it. thats how I have mine. it is wicked.
The install turned out great, I love the new sound. I also figured out that I might get some of my money back. The previous owner had a catback installed. It is a 2.5 inch dynomax. He didn't take good care of it at all and the tip is quite rusted but I might be able to sell it for 100 on craigslist, maybe?