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

Novitec Alfa Romeo 8C Spider adds boost for a sensuous 600 hp

Novitec has laid hands on the near-perfect Alfa Romeo 8C to create the 8C Spider Kompressor, a car the tuner claims is the “most powerful street-legal Alfa Romeo of all time.” Heady words, but they're nicely backed up by a supercharged version of the 4.7-liter Alfa V8 cranking out 600 hp and 434 lb-ft of torque. That's up from approximately 450 hp and 346 lb-ft on a stock Alfa Romeo 8C Competizione. Tweaks supporting the force-fed mill include a water-to-air intercooler, custom injectors and revised fuel and ignition mapping, plus a variable stainless-steel exhaust system.

Top Gear Russia outs the 2014 Mazda3 Saloon – probably not coming to the UK

The 2014 Mazda3 saloon (pictured) has been outed by Top Gear The UK and Europe have eschewed small saloon cars for hatchbacks in recent years. But in other parts of the world its the small saloon that’s big news, so many will be interested in the new Mazda3 saloon, revealed by Top Gear in Russia ahead of an official debut. Looking exactly like the new 2014 Mazda3 hatch revealed last week (there’s a shock), Mazda has managed to make the translation from hatch to saloon seamless, with proper flowing lines and no sense of a ‘notch’ grafted on the back.

Video: The Porsche Panamera Sport Turismo concept build process

Porsche has released a video featuring Style Director Michael Mauer charting the design process of the Panamera Sport Turismo concept. The 10-minute YouTube video, which also features General Manager Advanced Design Style Mitja Rorkert, follows the build process through each modeling phase right up until the presentation of the show car at this year's Paris motor show. "It always presents a special challenge when we develop a new kind of car for the Porsche brand," says Mauer, "precisely because we haven't been in the segment before, and the question of whether it matches the Porsche brand always looms in the background." We were impressed at the Panamera Sport Turismo concept's unveiling, particularly with its stance and detail execution, so the video is a chance to see just how this concept came into being.