Mercury Quicksilver Propeller 8 1/4 X 6 48-63494a10 on 2040-parts.com

Porsche reveals extreme 911 GT2 RS

Porsche has revealed its most powerful and arguably most extreme road-going 911 to date: the GT2 RS. The new rear-wheel-drive road rocket will debut publicly at the Moscow auto show in late August and will go on sale in the United States in October. The GT2 RS, to be built in a limited run of 500, is powered by the latest evolution of Zuffenhausen's 3.6-liter, twin-turbocharged, horizontally opposed six-cylinder engine, tuned to deliver a Le Mans-grade 620 hp.

Callaway introduces Camaro Z/28 SC652

The paint on the logo of the Chevy Camaro Z/28 isn’t even dry yet, and American tuner Callaway is already licking its chops in anticipation. The company says it can take that already-badass Z/28 and boost it to 652 hp, hence the name. To get the extra power, Callaway adds an Eaton TVS2300 supercharger to the LS7, a liquid-to-air intercooler, bigger fuel injectors, carbon injector covers, high-flow intake, low restriction exhaust, embroidered floor mats, door sill panels, badging, plaques, a Callaway key fob and a three-year, 36,000-mile warranty.

McLaren launches P1 'Designing by Air' online experience

McLaren has developed a new online experience, 'Designed by Air' to tell the story of the car's design and development. Designed by Air is the first of a two-part series and gives users the chance to hear in detail how the car was created, as the car appears from raw metallic and carbon elements and is crafted by airflow. The P1 is eventually formed inside a wind tunnel, designed to emphasize the car's aerodynamic qualities.