OK, I see what you have now. You have the first year of the new "J" style trucks. That is the same style truck as my '67 GMC 7500. Mine originally came with a V-6 Toro-Flow Diesel, but it got converted to a 6V-53 like you have. It was a 5-Speed, 2-Speed Rear, Air Brakes, Power Steering, Spoke Wheels, 10-20 Tires and a GVW of 31,000. (9 Fronts and 22 Rears). It was a Straight Truck with a long chassis that had a 20 Ft Body on it.
Bill
