This is a prototype of FIA racing spec Nissan GT-R under testing at Fuji Speedway in Japan. The car is still in development but judging on the looks of things it will be a GT1 Class racer, although it still looks pretty much like a Japanese Super GT car. Of course there are different modifications than the Super GT version but it shares the same wheels and braking package with the Japanese version. Other stuff are more European GT like, big front splitter, huge rear diffuser and giant wing.
Other racing stuffs on it are typical, like a GT1 based hood, Plexi windows, side exhaust and… .There is no info currently when it will be released or can this even make it to the 2009 season or not, but this is gonna be a serious contender.
source : GTRblog
PICTURE UPDATE :