For 2007, the Tundra is available with an economical 4.0-liter V6, an updated version of the 4.7-liter V8 found in the 2006 model, and a new 5.7-liter V8 with variable valve timing and capable of meeting ULEV emission standards. A new six-speed automatic transmission will also be on the menu. Combining the newly-available grunt with the 2007 Tundra’s 30-percent stiffer chassis and a tow hitch integrated into the frame allows this new super-sized Toyota to pull more than 10,000 pounds.