I agree the one hole version is what you from Fiat get but looking at all the other offerings from the specialized vendors ,that is exactly what you will get from them as well . I don't see any two hole offerings any more . And even with that it is at three times the price.
So when your original latch finally spreads from the repeated closings and does not latch properly you might as well buy the Fiat. Same factory , same manufacturer and highly likely same machine it is made on. Probably the same bloke making them . You can always drill another hole .......!