Actually need a good picture (with good lighting) to see the dropped height as well.
I have seen it here on this site:
Nissan 370z Performance Parts - 370z Suspension Parts / Coilovers / Lowering Springs / Shocks
You can also call Lou at Amplified...they are a site sponsor.
After looking at your post...it seems like nobody is actually stocking these. Though...supposedly Tanabe is doing another R&D session this month. I dont know what they are really testing...but they did ask for a 370Z I believe.