More Power! Get the details on the potent Porsche 911 GT3 RS 4.0

Porsche has ramped up the already heady performance of the 911 GT3 RS through the adoption of a new, naturally aspirated 4.0-liter version of the company's sturdy, horizontally opposed flat six-cylinder engine. The unit kicks out 50 hp more than the 3.8-liter six-cylinder used in the existing 911 GT3 RS. This mill claims 500 hp at 8,250 rpm, a figure which makes the speedster the most powerful naturally aspirated road-going version of the 911 ever.

Living with a Jaguar XF: a CAR reader's long-term test

I was definitely an XF ‘early adopter’. My S-Type had been reliable, relaxing transport with excellent ergonomics but the styling teetered nervously on the border between distinguished and frumpy. Then I saw the C-XF concept and was blown away with Ian Callum’s sleek, aggressively modern design.

Callaway Cars turns Corvette Stingray into AeroWagon

The first Corvette upgrade from Callaway Cars came in 1987 as an option from select dealers. The Vettes would go to Old Lyme, Conn. for the conversion, straight from the factory in Bowling Green, Ken.