Fantastic job!
Having owned a Manta GTE and a Berlinetta in my youth I'm shocked to say that I've never heard of this movie here in the UK!
I used to stare at pictures of the red Mattig demo car in Street Machine magazine and dream about one day buying the bodywork for my own car...you've captured the body lines and those wide steel rims, perfectly!
Somewhere, I have a very embarrassing photo in my and my wife next to my Berlinetta in a similar 80s pose...may have to track it down!