Its is a 2007 Peterbuilt.
A transgender dump truck, is a dump truck, that when it was made originally, was a cement mixer truck, that someone took the mixing drum, water tanks, hydraulic chutes, water hoses, valves, slump gauges, pump used to turn the mixing drum, fenders, ladders, and all other parts used by a cement mixer truck, and put a dump bed, hydraulic ram lift, PTO, and anything else needed to create a dump truck, on that chassis, but forgot to remove all the signs and stickers, that tell you how to operate a mixer truck, such as the sign on the inside of the drivers door that says, DRUM MUST BE TURNING WHEN TRUCK IS OPERATIONAL ON THE HIGHWAY. Not to mention the 300 to 500 pounds of dried concrete we found underneath the truck, on the chassis and springs. Needless to say, my boss ain't happy with his Dads great internet find.