Let's see ...
The name of the car is right in-game, but if you want to be precise, there is still something missing. (hint: it's not a mistake in the car name)
I wouldn't consider it as a mistake, since it never really existed. The LM cars (like the Camaro LM Race Car) don't have a year either.
I've edited my hint a little bit, to make it more clear. Sorry for that.