Remember, you asked for opinions: here's one
Alfa Romeo is gestalt concept.
It is a selection of components combined together by professional engineers working to meld them together to create a cohesive and synergistic experience in a vehicle.
The combinations are important. A Cobra is an AC Ace roadster
combined with a Ford V-8 engine, and various but differing suspension and body modifications. With a Chevrolet engine an AC Ace cannot become a Cobra even if it has all the other elements, and similarly, a Ford engine in a different roadster does not make a Cobra.
The Alfa 159 is a selection of components combined together by Alfa Engineers pursuing a specific and cohesive feel in the car- that gestalt equals an Alfa Romeo.
I understand that you are attempting to argue that your vehicle, with modified bodywork, different albeit Alfa-based GM engine, modified suspension design, T5 transmission, and (I forget whose) brakes, and a revised interior including Miata? seats remains an Alfa Romeo, but it is not, any more than than a Cobra remains an AC Ace. Your car is a "Bianchi"; an American ecceterini
. It is no doubt a very fine vehicle and unquestionably superior to the 70's Alfa Spider in which it is based.
I think you should embrace that, and perhaps put your own logo on it, as many proud small car builders/ modifiers like Abarth do. Your car is a great experiment and fascinating to read about. We're glad you're doing what you do and love the mods and improvements. However, a camel is never going to be a horse, no matter how much you beat it.