Post engine numbers to decode date & size of engine.
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ESN = engine serial number Numbers & letters to the left of the distributor are are stamped onto the flat machined boss.

Back then they called it a VSN = Vehicle Serial Number rather than a VIN = Vehicle identification number.
The numbers and letters are stamped into the plate that is located on the drivers side door hinge pillar.

The title should ether have the ESN or VSN on it.
What are the digits on the title?

1950 Chevrolet Specifications for Trucks Serial Numbers

Stovebolt VIN buster punch in your VSN to find where it was built.

Lost Engine Numbers Jim Carter oldchevytrucks.com

Screw On ID Plates Jim Carter oldchevytrucks.com