Is my car a Tag Job? Barracuda Decode...

1965 with a Stock Appearing 273 2bbl 3-on-the-tree with A-903.
vin is: 1857239282
It looks Soo stock in fact that I can't believe it was ever a /6 car.
It even has the bigger 10" Drums on it.
One of the Rivets in the VIN Tag is just barely sitting in there,
not to mention the first 2 numbers look like they were stamped later...
Please look at pics and give an opinion. Did I get taken?

273 .jpg

fender tag.jpg

vin.jpg

vin2.jpg

o.jpg