Tamiya sells a higher quality 1:24 scale 370Z model kit if you guy are are interested in building your own Z. However it's a curbside kit so no engine details or anything like that.
I was really hoping they'd do a full kit, and that AutoArt or Kyosho would release 1:18 scale diecasts of the 370 (They have a billion different 350 diecasts) but it's been over two years and nothing yet.