The wheels were delivered to the Los Angeles plant in sets. Each set were four Cragar wheels. The spare tire was the standard 13 inch rim.
If they were mounted on the assembly line or on a side line is unknown at the moment. I don't think Chrysler delivered the cars with standard 13 black wheels to Bell's Automotive, who was the manufacturer of the Cragar wheels, and had them put on the new wheels and then shipped the cars back to Chrysler. That would have been a very expensive way, it's is more likely that the Cragar wheels arrived from Bell Automotive in racks.
But what is known is that when the new Dart Chargers were deliverad to the dealerships the Cragar wheels and the Dart Charger 273 instrument panel and the fender badges was mounted.
