Greddy has just announced pricing on their TD06-20G kit for the Nissan GT-R. Coming in at an MSRP of $9800. The kit will only be available though GReddy Master Tuner Shops like SP Engineering. SP has USA-spec GTR, with a stock engine.
With their tuning methods they were able to increase horsepower by 305whp and 210.8 ft/lbs at just 1.45kg/cm2. That makes a 700+whp GTR. Check out the video of the car here.
Source : Greddy Blog