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
Engines
6.7L Diesel
Eighth VIN character A, B, C, D, E, F, G or H
7.2L Diesel
Eighth VIN character N, P, S, T, U, V, W, X, Y or Z
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.