@eb801 - I just used a different final number I found in the stash that was the proper size.
Jennings Heilig says the font on "Fuerza Aerea Argentina" is wrong, and he's correct when I looked at his comparisons. He is designing a decal for that. Other than that, you only need different numbers for the serial, and there are airplanes that had it overpainted, so you only need a serial on the underwing if you do one of the "field camo" schemes.
Attached is a photo of A-515 (the airplane that was mysteriously "lost" for a number of years and is now for sale as a "restoration project"). All numbers overpainted, the Fuerza Aerea Argentina lightly overpainted, and all you need is the underwing number, which can be created with scissors to the kit decal sheet. Pablo Calcaterra tells me the white area on the wing is upper and lower. This is one of the airplanes painted when they got to the islands, so the underside is the "anodized" look.
1 attached image. Click to enlarge.