1950 Five Window 640 Series on late model frame. Allison Transmission, Duramax Diesel Engine. All custom built, Interior done by Paul Atkins Custom Interiors. 8in. Stainless Stacks, A/C, Power Steering, Power Brakes, FUEL Wheels 22n. on front and 24in. on rear. Tow Package and also has Gooseneck. Color is Switchblade Silver which is a factory GMC color. Factory Split Hood (very rare) and Custom Aluminum Radiator. Thanks