I am the second civilian owner, first owner was a business that bought it just for advertising. I think the truck is 1983 or so, I have the title but it's locked up. The data plate on the dash for Date of Delivery is not legible. The truck shows 4,391 miles, and 10.0 hours, which obviously does not match. The data plate on the engine shows Date of Mfg. 09/07. Five tags riveted in the drivers door frame all show "MWO APPLIED", all dated 2NOV07, another tag shows the maintenance work completed at Fort Riley. Is it likely that the engine was replaced in 2007? If so, would the replacement engine have been a new one? Is that a standard procedure for the military? If so, and if this engine only has 10 hours, I assume the milage was not reset because it is for reference for the drivetrain? Last question, what is "MWO APPLIED"? Thanks in advance for all your assistance.