It's possible / probable that the fourth aircraft in line, in the last photo posted above, is "H", as the aircraft seem to be lined-up in alphabetical order, no doubt for publicity purposes for "Signal" magazine.
From what I remember of this kit from 50+ years ago, there were a number of alternative parts for underwing / fuselage stores, allowing a "generic" model to be built. Of course, aftermarket decals will be available to allow different aircraft to be portrayed, from this or other units.