Manley Valve Exhaust Stainless 1.600" Dia .341" Stem 4.911" Length Chevy Ea on 2040-parts.com

One Lap of the Web: A Tumbler for Gumball, smashing supercars in China and a pedigreed race car for sale

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. The Gumball 3000 starts May 18 in Copenhagen, Denmark, heading northeast toward Stockholm, Sweden.

Porsche celebrates 50 years of the 911 at Pebble Beach

Seven generations across 50 years; nobody has ever matched what Porsche has done with the 911. What started out as the Porsche 901 quickly became the 911 – and wouldn’t take long to become a legend. As one of the most accomplished road-going supercars ever created, it's easy to see why the 911 is also a consummate champion in the motorsport arena – and to celebrate that fact, at Pebble Beach 2013 there was a huge array of road and race 911s, courtesy of Porsche itself along with a stack of private owners.Click through the gallery to see our pick of these great cars...

Z-Party: Nissan marks 40 years of sports-car fun

It's one of the most iconic names in the auto world: The Z car. No matter the number--240, 350, 370--that singular letter rings true with enthusiasts. And the style, power and pure fun of Nissan's famous sports car are being celebrated this week around Nashville.