Porsche's hotly anticipated 911 GT3 RS is tipped to get 493bhp and 460Nm of torque from a newly-developed 4.0-litre naturally-aspirated flat-six engine, according to leaked internal technical documents. The driver-focused sports coupe will appear for the first time at next month's Geneva Motor Show.
The figures, although unconfirmed by Porsche as yet, are only a marginal boost over the standard GT3's 475bhp and 440Nm, but the all-new powertrain will combine with a significant weight reduction and increased aero efficiency to bring it closer to Ferrari 458 Speciale performance levels.
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