I have a set if Top Spin design 3" seat belts (black) with the carbon fiber harness guides for a B6 or B7 S4.Also have a custom made harness bar for the vehicle. The seat belts clip in and can be easily removed. I use the shoulder straps with the harness bar which bolts in below the rear package tray and behind the rear seats. Using a different set up on my RS4. I have lots of pics - the set up is like new and needs a good home with a fellow track junkie. PM me for pics and and a great price.