I have to agree PJ that this McCormack you have found and my puzzle car are absolutely identical.
But that's not the name I have for it! It's another one of those where the same body was used by different outfits using different names, some of which no doubt made a body or two and some which probably didn't...
So I'll give you a point because I can't argue that you're wrong, but I'll keep the puzzle open and another point is available for the name I have (and I have good proof that it was at least advertised under the name I have, but whether or not they ever made or sold any cars I have no idea!)