1965 Dodge Dart Charger

OK this is what I found: of the 8 horns - 4 hi 4 lo, a pair of them is 46 4; another is 33 4; another is 35 4 and another is just plain 40. I could not find any date codes on the other 3 - at least in the same place as the others. I have not checked the original horns on my 65 Barracuda, which was built in Mar or so of 65.