The P40, a 4,000-horsepower unit, arrived in 1941. It was followed by the 4,200-horsepower P42 in 1996. Each powered model features a distinctive, highly detailed paint scheme and includes detail parts such as air horns, exhaust stack, etched fan grill, radio antenna, steps, plastic air tanks, battery boxes, pilots, front snowplow and headlight and classifications light lenses.