If you were interested in proof the Switzer R1K Nissan GT-R lives up to its 1000 hp claim, here it is exceeding it, returning 1005 hp and 811 lb-ft of torque. Monumental dyno chart below.

"Don't compete with your contemporaries, crush them." seems to be the operating principle at Switzer Performance which has unofficially debuted its 1000 HP Nissan GT-R R1K package. Without a doubt, this kit is aimed squarely at the Bugatti Veyron.