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

Infiniti LE Concept

Infiniti's new LE Concept, a zero-emissions luxury sedan, has been unveiled at this year's New York auto show. The LE Concept, which is approximately the same length as an the brand's G Sedan, features Infiniti design cues such as the double-arch grille, crescent-cut C-pillar and a strong shoulder line surface. Design features such as the aluminum-alloy wheels with aero treatment, the high rear deck, rear aero diffuser and aero side fin spoilers with integrated illumination contribute to the coefficient of drag of 0.25.

Porsche Panamera convertible plans uncovered

A series of European and U.S. patent applications obtained by AutoWeek show that Porsche remains committed to building a four-door convertible version of its flagship Panamera, despite recent comments from Zuffenhausen insiders indicating the car had been canceled. The new car, depicted in official drawings that accompany the latest Porsche patent applications filed in February, eschews the two-door route taken by all of its upmarket rivals for a practical four-door body.

Sales enthusiasm? Sports-car and luxury brands show strong market gains

Count Porsche among enthusiast and luxury brands enjoying huge sales gains this year. Sales for the German automaker are up 29 percent so far this year-one of the largest increases in the industry. Almost one-third of Porsche's total sales came from the four-door Panamera.