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

Concept Car of the Week: Mazda RX500 (1970)

Developed by the Toyo Kogyo Company's advanced design and engineering team, the Mazda RX-500 was described as a ‘mobile test bed for high-speed safety'. Looking at its design, the team's childlike enthusiasm has shone through, resulting in a very cool concept.  From the rakish front to the wraparound windscreen and on to the bread van rear, everything communicates high-tech and ‘70's futurism while also channeling a little of the Star Wars X-Wing. Thanks to plastic body panels, the concept weighs only 850kg and is powered by a 491cc rotary engine delivering 247bhp fitted behind the cabin, in front of the rear axle.

One Lap of the Web: the Kitzb

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- Older Aston Martins can now be enjoyed by the public, as the automaker has opened their Heritage Showroom in England for all to see.

Saleen Performance to end S302 Ford Mustang production, prepares to expand

If ordering a Saleen S302 Ford Mustang is on your wish list, the time to do it is now. Revstone Industries, owner of Saleen Performance Vehicles, said on Wednesday that it will stop taking orders for the car in May and will finish building Saleen Mustangs in suburban Detroit by the fall. But the Lexington, Ky.-based company is not getting out of the performance parts and merchandise businesses and isn't abandoning the vehicle-upfitting field, spokesman Pete Borum said.