Nissan Diesel America is completely revamping its UD Truck line for 2005. The manufacturer is dropping its 12,000-lb GVWR UD 1200 chassis and replacing it with a 13,000-lb GVWR UD 1300 model. The UD 1800 CS (City Spec) will undergo several changes, the most significant of which is a larger cab. The 1800 CS will be spec'd with the same cab used on Nissan's UD 1800 HD (Heavy Duty) model, giving it more side-to-side room so that three people can fit more comfortably. The larger cab also increases the truck's forward visibility, expanding its windshield size from 1,900 sq. in. to 2,465 sq. in. Engines for all of Nissan's UD trucks are going to change as well. Units will have either the new four-cylinder MD 175 or the six-cylinder MD 230 diesel powerplants. The MD 175, standard on UD 1300, 1400, and 1800 CS models, offers 175 hp and 347 lb-ft of torque. The MD 230, standard on the 1800 HD through the 3300 HD chassis, offers 230 hp and 506 lb-ft of torque. Other changes include an automatic Aisin transmission, which is standard on the 1300 and 1400 models. Factory-installed air conditioning will be standard on all UD trucks. Finally, a standard air-ride driver's seat will be offered on the UD 1800 HD chassis and above.