Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Concept Car of the Week: BMW Turbo (1972)

Built by Michelotti in Turin and unveiled at the 1972 Paris motor show, the BMW Turbo was built both as a symbol of the carmaker's strength after its troubles in the ‘60s and as a celebration of that summer's Olympic Games in Munich. This two-door coupe, based on a modified 2002 chassis with a mid-mounted engine, was born when BMW's design director Paul Bracq convinced the board to let him design a concept that would be part design exercise, part technology testbed. Safety had become an increasingly important consideration following a number of design summits in the early ‘70s, and Bracq used the Turbo to test out a number of safety solutions.

Rolls-Royce Ghost V-Specification dialed up to 593-hp

Just before a refreshed Rolls-Royce Ghost debuts at the Geneva Motor Show in March, the British automaker has rolled out a performance edition of its "entry level" sedan with 593-hp underhood. The standard Ghost sedan wasn't exactly short on power until the announcement of the V-Specification version -- the company's 6.6-liter twin-turbocharged V12 engine produces 563-hp and 575 lb-ft of stump-pulling torque in standard form. Yes, gone are the days when Rolls-Royce declined to disclose exact power figures and simply listed their powerplants' output as "adequate." Now Rolls-Royce is forced to compete in this cutthroat market with its performance stats, it seems.

2013 Mercedes-Benz GL63 AMG packs 550 hp

Mercedes-Benz is adding a fire-breathing AMG variant of the GL sport-utility vehicle for the first time for 2013. The people hauler will pack a biturbo 5.5-liter V8 rated at 550 hp and 560 lb-ft of torque. Code-named M157, it's capable of propelling the ute to 60 mph in 4.9 seconds en route to an electronically limited top speed of 155 mph.