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

Porsche Cayman and Boxster GTS on the way

Porsche Cayman GTS and Boxster GTS variants are expected to be unveiled at the 2014 Beijing Motor Show this year, before the upgraded versions of the German firm’s two-seater coupe and convertible models go on sale in April. According to reports, development work on both cars is now almost complete, with both vehicles gaining a power increase and revised styling over existing Cayman and Boxster models (pictured). On Bing: see pictures of the Porsche Boxster GTSFind out how much a used Boxster costs on Auto Trader Porsche has used the ‘GTS’ tag before, for versions of its existing cars that provide a more focused driver experience and greater emphasis on involvement and handling, and which retain normally aspirated engines.

Mazda brings diesel back to Indy with 6 Skyactiv-D

Diesel has enjoyed great success lately as a racing fuel, but there's one place it hasn't appeared for more than six decades: Indianapolis Motor Speedway. Mazda's breaking that dry spell this weekend, when its Mazda 6 Skyactiv-D race car will head to Indy for the Grand-Am race. We like the 6 in both road trim and racing livery, but that previous diesel-powered racer -- the Cummins Diesel Special -- is pretty neat too.

Bentley Continental GT3 road car debut at Goodwood Festival of Speed?

The Bentley Continental GT3 (pictured) looks set to turn in to a road car The idea that the Bentley Continental GT3 – Bentley’s track special – will, at some point, turn in to a road car has been around for a couple of years. But it seemed unlikely. It seemed unlikely because a stripped-out Continental with a GT3 badge, pushing on 700bhp and stripped of many of its luxuries would step on the toes of what we expected – a new Continental Supersports.