Just to toss my 2cents in, We could use the International Harvester name up to 1985, trucks manufactured after 1986/current could be referred to as International. To the best of my knowledge I have never seen the Navistar name on a Truck. The Navistar name was always used to refer to the Diesel drivetrain, mostly in Later Ford Chassis. ie after '91. I believe this would eleviate much confusion on how to correctly list a vehicle. Just a thought..