All the road A500s are built in Poland and shipped to the UK no detours via Italy, you'll note the thread where Delaney helpfully tells you the ship movements

The Assettos, R3Ts (and I hear that the 695s will also be) are taken off the line and taken to Italy for stripping and rebuilding. AGPs are built in Italy but in the normal GP factory. The AGP S2000 cars actually start out as normal Fiat Grande Puntos which the Abarth team buy and rebuild from the ground up, they don't start with a normal AGP.
So if it isn't a competition car it it comes out of the factory as is.