The Ford F250 is offered both in 4x4 and 4x2 models. The F250 SD Regular Cab 4X4 is a 2-door, up to 3-passenger full size pickup, available in two trims, the 137-in WB XL Styleside and the 137-in WB XLT Styleside. These trims are equipped with a standard 5.4 liter V8 NL-horsepower engine. The Styleside model comes standard with a 6 speed manual transmission. The main drawback of a diesel engine is the emission levels.