FYI - when I first got mine back in 03 I had a 100% stock R34 GTR dyno'd and it made 177awkw's.
With an exhaust, cam gears, boost upped to 15psi and a power fc that was increased to 255.
If you want the easy way to know if the car is a genuine V Spec if that is what you are looking for / at check the central MFD. The V secs show 7 readings on the multi reading display. The non V Specs show 5 (don't show exhaust or intake temps).
Have fun.