Please clarify a few items on the 38 Standard for me

[TJP]

The frame rail stamping is 184474882 Same number is used as the VIN. I'm assuming puts it in the change category time frame
As mentioned it's more of a curiosity thing as I've read so many reasons over the years.
I bought the car in 1983 and the front clip may have been swapped prior to that adding the trim, or as you've stated it was after the mid year change. When I bought it, it had the 85HP in it but the little round HP emblem was missing.
thank you again ��