Threadjacker!
Yeah...you and the rest of the import world. V8 TT, I believe is their top of the line. Estimated $60k? I'm still not much on the design. Of course, the G35 is a skyline, just the lower grade (there's 5 levels, I believe). Nissan's looking to compete with the Z06's on this one.
Some people think that it will be a stroked VQ35DE (current G35/350Z engine) with forged internals and lower compression 8.5. It will have an active center and rear differential that will start off at 10% front/90% rear until the rears start losing traction then shift up to 50%/50%. On some sites they estimate this car will come stock with about 450HP/450lb-ft but we'll see.
http://www.nissanusa.com/gt-r/