Cycle World published some interesting stuff on boost and power outputs with regards to H2...
ZX-14R 180 hp stock
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5 psi: 240 hp
7.5 psi: 272 hp
10 psi: 302 hp
ZX-10R 152 hp stock
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5 psi: 203 hp
7.5 psi: 231 hp
10 psi: 257 hp
ZX-6R 107 hp stock
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5 psi: 143 hp
7.5 psi: 162 hp
10 psi: 180 hp
So if 200 hp is the figure we think they're aiming for a 1000cc motor would only need a minimal 5 psi of boost to reach that figure, but a smaller 750cc engine would likely need between 7.5 and 10 psi of boost to reach that level. Now we get into interesting conversations about longevity...