Pictured tailgate will work, because all the mounting hardware is the same, but it's actually for a 1967/72 F100/350 (small FORD letters surrounded by a raised ovate scallop line).

1964/66 F100/250 2WD & 1966 F100 4WD Styleside tailgate has large FORD block letters.

 

All the mess and chaos in my storage and you see at the first glance that my tailgate is not correct
I got it cheap and my plan was to cut only the lower part of it as repair patch for the tailgate of my truck. When it arrived here, I realized that it will be really difficult. So maybe I will take it like it is. Did not decide yet...