There have been a couple of people more than 2 that innstalled that brand of exhaust. I heard it's not bad... you can always look at their website and see what reviews have been given.
I had the Gibson on my '97 X and it was ok. Performace was decent, but the sounds was, well, ok. Now on my ST, I justed installed the Dynomax Ultra Flow cat back and WOW, haven't heard anything on a v6 sound better. If it holds up, I wouldn't buy anything else.
Well the exhaust is on the truck now and I like how it sounds. I will need to recheck the install as I heard a rattle when I got near home tonight. It probably just moved over near the rear shock.