Toyota entered the full-size pickup truck market with the Tundra in May 1999 following its previous attempt at a mid-size pickup truck called the T100. Toyota originally named this vehicle the T150 but renamed it to Tundra after Ford's legal restrictions on the F-150 trademark demanded the change. The 2007 introduction of the 5.7-liter V8 engine for the Toyota Tundra integrated Toyota VVT-i variable valve timing technology to boost both performance and fuel efficiency. The Toyota Tundra started using a standard six-speed automatic transmission to replace the older four-speed unit which resulted in better acceleration and towing capacity and improved fuel efficiency. The 2007 redesign of the Tundra expanded its capabilities through a combination of three cab configurations and three payload options together with two transmission choices aiming at meeting different consumer demands. Models with the 5.7-liter engine could be equipped with a towing package that included a heavy-duty radiator, transmission cooler, and a tow hitch for improved towing capability. The driving dynamics received more refinement through better suspension as well as steering updates in the 2014 model which improved overall vehicle handling. The Toyota Tundra dedicates itself to manufacturing reliable genuine parts through extensive quality control procedures to serve customers who require original equipment manufacturer components.