300zx GTZ???

Hi everuyone.. I was lookin at 300zx Twin Turbo stats and i came across to a 1990 300zx GTZ.
It has 430 hp 440torque. I was wonderin why i never heard of this car before. Is it available to buy? How much is it?? Is it available in the US???

After seraching the net for a bit...not too long...I came to the conclusion that the GTZ seems to have been a car since it was in a magazine...but mainly I think it is all the looks parts put on TT. Yes those power numbers are correct but it doesnt take much to get those....meaing you do intake, downpipe, exhaust, ecu, injectors...you are already around 400HP...to get 30 more...just crank up the boost a bit more and get a few other goodies. GTZ is alot of aerodynamic/visual products as seen in the second link below. The first link gives you the performance numbers on the GTZ in the magazine it was featured in. Stillen is the one who made this car by the way.

http://www.z32.org/html/z32perf.shtml

http://www.impactparts.com/stillen/index.html?target=Nissan_Aero_Kits.html