Really crude numbers.
170-ish uses all 426 HP
Power required is roughly a function of speed (cubed)
200 mph would need 426 x (200/170) x (200/170) x (200/170), or about 693 HP.
Call it 700 for a 5th gen
Let's say the 6th gen is slightly more aerodynamic, call it a 5% better drag coefficient. Now the crude math looks like this . . . 426 x (200/173) x (200/173) x (200/173), or 658.
Both of those HP numbers may be slight over-estimates, because rolling drag does not increase as fast with speed as the aero does. But you're still looking at forced induction or an expensive Xfinity-level NASCAR build if you're thinking normally aspirated.
Norm
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'08 GT coupe 5M (the occasional track toy)
'19 WRX 6M (the family sedan . . . seriously)
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