Interesting thing about fonts and the aircraft they are going on is, you really have to take a good look at your documentation. Follow your documentation.
Sometimes the numbers are condensed and the spacing changed. Even insignias, if the aircraft your modeling has been restored, the application may not be totally correct. So, the model shouldn't be correct either to be correct. Correct?
Here's a good example on this award winning scale model I did the graphics for. The word NAVY is condensed because of the fit. Not the fit on the model, but on the actual aircraft. A few other numbers were altered from the "correct" font also as was the Star n Bar insignia. The red is a tad thinner. As this appeared on the actual aircraft.
Also, you can't just condense a font because the verticle strokes get thinner than the horizontal and you can see this. The entire letter has to be changed so the stroke thickness stays the same.
I follow documentation as best I can if there is some.
Charles