"Magnason/Autotech roots style supercharger for 4cyl 8v motors with CIS injection, includes all plumbing needed to install in either an A1 or A2 chassis car. It's an old kit that autotech put together for the rabbit, using a magnason blower, and a special intake manifold, and drives off the cam, then later adapted to the golf with a custom intake tube. I got the unit a little less than a year ago, and had Magnason rebuild the entire thing with all new beakins, drive gears, seals, rotors etc.. before I installed it. I also aquired a new intake manifold for it from Autotech. The supercharger produces about 8psi of boost with the current pulley. Autotech used to sell a larger one that would raise that to the neighborhood of 12-14 psi, but I was never able to find one.I'm not sure af the exact cost of the kit when new, but I did see numbers close to $3000 or so. It's all very easy to install, and everything you need is in the kit."