Agree with all. And yes, the instructions are there, for the correct kit of the correct type. The 'F' designation was only for the USAAF, and the original Manufacturer's number, P51D, remained in use with all other users at the time. To make new artwork, film separations, printing plates etc, just for one letter, would be senseless. In effect, Italeri are quite correct, marking the box as a F51, and the instructions remaining as P51, as that is what it is. It may well be that the 'history notes' at the head of the instructions explain the change of designation after WW2, and will most certainly give the basuc history/specification anyway. The fact that the box is printed with a picture, and the title of a F51D makes it very clear that the contents represent this type, and not a WW2 P51. Anyone who wished to model a WW2 aircraft from this kit would only need to use the relevant decals.