HI
Unless your exhaust is in a bad way or your going to keeps it for years, I would not bother
There quite expensive, Adamesh rear silencers are nearly £500 and a Miltek system is nearly £2000
If it were a V8 then it would be a definite YES, Have them on my STR and they sound Great!!, but it quiet on a run
but the V6 does not respond that well to exhaust, it will be louder but you get a constant drone
easiest way to tell if you will like is drop your rear silencers off, takes 15 minutes and that what it will sound like with a sports type stainless system
next to no power increase either
now if you after a replacement for a rusty system, than a descent stainless exhaust centre, can build you a custom one and they can make it quiet if you require it, but I bet your talking £300 to £500
cheers
Joe