In 93' or 94' I purchased an NOS AM radio faceplate for my 69' Super Bee from a dealer. I had the part number, they ran it and found supposedly the last one available. It was on the shelf at a dealer in Virginia (I'm in Massachusetts). I think it depends on what is/was kicking around in the dealership parts departments.
Back in the 80's & 90's I found if you had the part number, the parts department coud do a search for any given part. I haven't checked at a dealer in many years, figure any good stuff was bought long ago.
It also depends on the dealers listing what they have on the shelf. In 1999 I found a window limit switch for a 68 Coronet Wagon the exact same way
