2005 Chevy 4500 crew cab, has a 300hp Duramax diesel motor and an Allison 5 speed automatic transmission, has four wheel drive, manual lock out hubs and electronic shift transfer case. Has a differential lock, power windows and locks, tilt, cruise, 19.5 Goodyear tires at 75%and only 20k miles...unit is extremely nice! Also has a 12' flatbed with a gooseneck ball and reciever hitch on the back. 84" cab to axle. The unit has a one hundred thousand mile warranty on motor and transmission. Has pto provisions, double framed with front and rear stabilizers and 5.13 axle ratio. Unit has an extremely short turning radius.