I've just fitted one in the last week onto my 1.8T via a garage.
It's a fair bit louder than an OEM exhaust and I guess for someone who wants the car as OEM as possible it's a bit loud. No issue for me as I've had sport exhaust across most of my cars and my 75 isn't being used as a gentlemans car.
I also had issue with the fitting and the sleve listed didn't work either, they ended up just welding it on.