This car appears to be an early Virginian. Looking at the registry, there's only one car with an earlier serial number reported. That would be why there's no continental kit. The early cars were not always equipped...the later ones stood a better chance.
The extra lights are probably for the add-on turn signals.
Between this car and a 53, what wouldn't interchange would be the front sheet metal, tail lights, windshield, trunk lid and hinges, trunk ornament, intake manifold, and bumpers. The interior differs as well, otherwise, most everything else is the same.