I really needed to upgrade my rear end on my 2013 TDI Sportvan. I couldn't afford a new set of springs at the moment and my van was flown many years ago. Read a few people who have used them and thought I would give it a try. The best price and good reviews from other sports car owners. Impressed that they fit well and I didn't have to take anything apart to install them. Be sure to suck out all the air first until it's flat. You can fold it up and clip it in the springs as shown in my photos. After placing, insert the discs, connect the hose and blow out with air. Insert slices to make sure nothing is twisted and fill in the rest. I did all that and adjusted it to 13psi before lowering the jack. You can see the elevator! But watch out for the hose! Plan for turns, heat, and potential leads. So far, so good. I'll update if anything comes up. Once I figured out the technique and plan, each side took about 20-30 minutes. Take your time and run the tubing a variety of ways to find the best one.