I have had one on for a long time, many years prior to supercharging it too. Works good but V6’s sound like cr@p regardless of what you do to them.
The only problems I have had are:
You need the O2 sensor “mufflers” as well. Beaudesert sell them.
One of the resonators failed, but it was their older style and they replaced the pair.
Since fitting the Supercharger 12 months ago I have blown the snot out of one of the cats.
Have a look in my profile, there are before and after dyno curves for original car then same car with the Beaudesert exhaust, but is has an XEDE on it as well to get the best out of the exhaust.