Not exactly what you were getting at, but Ford does something similar with the Transit Connect. It's imported as a passenger wagon with back seats and windows, which are removed in the US.

You may be on to something.

What's inside the box? That's not a box, its a large paper weight. The random stuff inside is just to add weight.

Not in any means that would remain profitable as it would require post-processing from the component manufacturer and then modification before they could feed the components back into the pick and place robots.