It depends entirely on how it "broke"... It any debris did or were to come loose your engine could be completely trashed, but that would happen at just about any speed.
As for how it'll run if debris doesn't make it into the system well... it'll be weaker than a 7M-GE. The intake is one hell of a restriction, the system isn't set up to make torque at lower RPM like the N/A, the compression is quite low for a N/A....Basically in a 3400lb crippled N/A you'd be a laughing stock at any drift event.
But, just because of the potential for damage I would advise you swap in a N/A intake setup and exhaust.
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