give them a ring and speak to Jerry, he is very forum/scene focused. I have worked with them to sort out group discounts for the T4/T5 van forum and TT forum.
They are real people who have been in the exhaust business forever, and not fly-by-night franchise heros.
They have also started visiting vw/audi shows and know, how good reputations and the vw/audi forum scene can only be good for business.
Tell them you have seen pics of Paul's car.
the system they built for my audi TT was a work of art, a ****** shame it was under my car