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

GMC Granite at the Detroit motor show 2010

This is the GMC Granite, a new concept car unveiled by GM at the 2010 Detroit Auto Show. Designed to move away from GMC's current range - which is dominated by pick-up trucks and full-size 4x4s - the Granite is much smaller than any GMC currently on sale. Yes, the Granite is just 4097mm long, making it shorter than a Ford Focus or BMW 1-series.

Mercedes AMG GT revealed – but just the interior

The interior of the new Mercedes AMG GT The Mercedes SLS is coming towards the end of its shelf life and, although it’s not getting a direct replacement, the new Mercedes AMG GT will fill the void left by the SLS. Due to be revealed at the Paris Motor Show in October, Mercedes has decided to throw in a bit of a sneak peak at the AMG GT ahead of that and take a bit of the gloss off some of the new reveals at the New York and Beijing Motor Shows this month. So we get a look at the interior of the AMG GT in two photos (above) which show a cabin that makes it clear the AMG GT has a healthy dose of Grand Tourer in its nature, with lashings of leather and technology to make the AMG GT’s cabin a pleasant place to be.

Alfa Romeo 4C convertible likely for 2015

Conventional wisdom holds that if you want to take on Porsche's 911, you need a convertible variant. And although Alfa Romeo's often marched to the beat of a wonderfully idiosyncratic drummer, it sounds as if it's hewing to general sporting-car rules of thumb with the 4C. According to a report in Britain's Autocar, sources have confirmed that a 4C convertible will follow the launch of the coupe by about a year.