No, I don't have their tube chassis, I do have the Fiero chassis with the NAERC wide track suspension and big brake kit. It was the first thing I bought when I decided to do a build. Back then they were selling the kit (wide track and big brake) for $4500, plus another $700 for the quick lift option which was crap. If you look in the pics you can see the black airbag, which were fed by a storage tank and small compressor. The problem with the quicklift was that the compressor supplied was so loud and took so long to fill the tank, it seemed like it never stopped running lol! And, the compressor couldn't supply enough pressure to fully inflate the bags, which only gave about a 1 inch lift.
I later (2 years ago) changed it all out with the AUDI front lift system, which gives me a full 2 inch lift.