He didn't specify a year. The video showed what looks to be a plain old universal socket. I've put tons of them in over the years and they all looked & installed like that one. I didn't know a '57 truck would be any different. Is it? Does it work differently?

Save a life, adopt a senior shelter pet.
The three main causes of blindness: Cataracts, Politics, Religion.
Name your dog Naked so you can walk Naked in the park.