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The plastic air deflector is not an upgrade. Every engine is supposed to have it. The 5 blade fan was only there to make the engine run hot to reduce unburned hydrocarbon emissions in slow speed US driving. They were intended to have 11 blade fans.
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1971 911S, 2.7RS spec MFI engine, suspension mods, lightened
Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
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