I went and took a closer look. The engine number matches the vin number on the title, What is on the title as a product number does not match the serial number that is on the plate on the door jamb. According to the serial number (3kpk-21742) it's a 52 1/2 ton Chevrolet. Should the product number on the title match the serial number on the plate? This is a nice looking 5 window with the back 2 corner windows (I'm not sure if 5 window means the windshield is split in 2 or does not care about the windshield but it's the back 2 corner windows).