Worked out from the recall campaigns and bulletins that list both. It does not mean a part or a repair for one fits the other.
Trims
F-Series Super Duty
4x2, Truck
Engines
5.9L Diesel
Eighth VIN character 1, 4, 8, B, G, J, X or Y
7.2L Diesel
Eighth VIN character 2, 7, A, H, N or R
7.3L Turbo V8 Diesel
Eighth VIN character 5
Position 8 of a VIN names the engine on many vehicles: how to read a VIN. Safety equipment depends on the trim, so decode a VIN to see what one vehicle has.