That would be me!
I have a Stattama kit from zzp. I am running a T72 turbo with the supercharger (3.4 pulley on the s/c right now). The supercharger will give power off the line up to about 6psi, and then it will bypass and the turbo takes over. For the street, this is a nice setup. I am limited to 15psi right now because I am still in the process of installing a second W/A intercooler. After that gets done, I hope to push closer to 20psi. Still, at 15psi and 15 degrees of timing, this thing moves. I ran the 12.69 with stock heads, stock cam, and stock trans. I have since upgraded the trans to 3.29 with 1" chain, but haven't made it back to the track.
There are a few other people running twin-charged as well. The real advantage to twin-charge is that you can run a bigger turbo like a 70 or 72, and not have lag.
Here's a pic of my setup right after I installed:
http://i20.photobucket.com/albums/b2...winCharged.jpg