I see no problem using it if clearances are okay, and you're not building a "spec" motor.
You're going to lose a little bit of compression (should be way under 10%, more like 1%), so I doubt you'd feel it (maybe a couple of HP).
The rotor face is machined, so is this a turbo or non-turbo rotor - 9.7 or 9.0?
-Ted
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