The frame is stamped twice, once above the front axle between the steering box and radiator and then again under the cab to the rear of the Master Cylinder. The frame number will not have the "V" (V8) or "3" (Model) stamped, it will start with the Year, then Plant letter and then the rest of the s/n. The stamped numbers are about 1/4" tall and span about 3".
Also if this is a true V8 truck as indicated by the title number it will have the lower front motor mount brackets riveted to the crossmember, not bolted.
Mike B
