Vin issue 1965 barracuda
That has to be a really OLD one.
If it has a title that matches that number then it's the same legitimacy as a factory one.
They usually issue state vins if the original tag was damaged.
I had a 70 road runner with a state issued vin that was issued in 2008, because the dash had been cut up and they cut though the tag and some of the tag was missing. The newer state tags have more info and a "control #" with a number that corresponds with a registry the highway patrol has.
I think this one should be fine with a matching title because it's such an early car that do not have stamped body numbers.
The number on the radiator support should match the order number on your fender tag.