The quality of the pieces are good but I didn't recieve all of the hardware. I bought mine through Relly Motorsports and omited the air springs because I bought the Alter-k-tion with coil-overs. IMO, you should't mix spring types. Why go air in the back when you don't have it in front? Alter-k-tion is now available with air suspension but I bought mine before Bill re-did his jig to allow for both coil-overs or air springs.
Why did I go with the Air-Bar if I am not doing air? Well, for my application I wanted a triangulated 4-bar or a 3-bar suspension. With time not on my side, I decided to go with the well designed (regardless of shock type) 4-bar set-up. I had ruled out a 4-link because it isn't as dynamic of a system, it binds too much when cornering.
Overall, the system is well designed but there is an issue with the quality control of the packaging and shipping. I dealt with RMS because I have a good customer relationship with him and I like to support his efforts, he told me he has heard of several instances where the customer did not get all of thier bolts and washers. I had bolts I didn't use and not enough bolts I did need. Perhaps I got another Air-Ride kit's bolt group, they do alot of different kits for alot of different cars.
I would do it again but I would demand, from the beginning, I got my bolts. I spent and extra $23 at the hardware store.