There's 2 sets of figures, 135cc/min which came from Nissan Motorsport Europe and 148cc/min which was the published figures taken from various Japanese websites over the years. All figures at 3bar, (43.5psi).
If you're going for bike throttlebodies you'll probably end up with something around the 230-280cc/min area depending on which ones you opt for. As a comparison we are running 250cc/min with our Jenveys.