68 Barracuda mystery - Can someone provide some information?

Well, I think you misunderstand most of the comments. Haters? Some of us have been around these cars to know what belongs and what doesn't to a certain degree. Yes, there are anomaly's but not to the aesthetic degree of your car. Most who are new to certain models hope, to some degree that they have some rare, maybe valuable factory special. That doesn't qualify here. As pointed out, someone at some time had their way with that car. Whether they saw the movie Highwaymen or Corky's and had access to a yard full of car parts, beauty is in the eye of the beholder. Finally, usually factory-built show cars have a very low numerical vin or order number. Just my 2 cents
Perhaps I should have been clearer in the beginning. I never thought that this was anything special or unique outside of someone's "hotrod". The grille was done well enough for doubt about its origins and as anyone who has been around Mopars for any length of time "you never say never" which is why I asked the question in the first place.

I certainly am not new to this model or most any other Mopar having been in the hobby since around 74, but I am not an expert on 2nd gen Cuda's as this is only the 2nd or 3rd one I have ever owned (I always preferred B and E bodies).

I completely agree that many people look very hard to try and discover something that makes their car special (read valuable) but I have owned enough of these cars to know that this is not my luck. I have had a lot of cars over the years but never fell into a 6 pack, hemi car, etc.

The "factory built show car" comment was meant as a joke.