Porsche unveiled the 911 GT3 RS. Under the hood — which, don’t forget, is actually ’round back — is a 4.0-liter, naturally aspirated, flat-6 gas engine producing 518 horsepower, up from the previous iteration’s 502, thanks in large part to a new set of camshafts. All that power heads to the rear wheels through a seven-speed, dual-clutch automatic transmission, which features shorter gear ratios than the current GT3. That’s enough thrust to reach 60 mph in just 3.0 seconds, topping out around 184 mph.
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