A Fiat is a Fiat and has nothing to do with the German Empire. Car standards are the same throughout the EU, and cars made for North America meet North American standards, which are not necessarily the same as EU standards.
My last advice was to a Canadian returning from Venezuela. He had a Mazda 323 built in Colombia, and wanted to know what modifications were needed to bring it to Canada.
The Canadian government has several pamphlets dealing with this, and the car in question, outwardly thesame as a “Canadian” 323 needed rear seatbelts, daytime running lights North American bumpers, North American emission gear, etc. Total cost far more than the car was worth.
As I mentioned before, in the 60s many Canadians and Americans posted in Europe brought their cars back with them. A classmate stationed in Brussels, Belgium brought back his Mercedes. Very little emission gear in those days. The local Mercedes dealer had no problems tuning it up.
So, If I were you, I would contact the French Consulate in Vancouver, and get similar documents for taking a North American Fiat to France. Then calculate, based on Canadian labor rates, what it would cost. Add the freight and the import taxes, etc, and then you will be able to decide whether this is worthwhile.
We can only point you in the right direction and warn you what you are in for. Sometimes diplomats at a very high level can take their cars to a foreign country and be exempt form local emission and safety regulations.
The French may be romantic but their civil service is unforgiving!