Does your truck have modern hydraulic tube shocks or lever action shocks? Tube shocks were introduced in 1950.
What do the side emblems on the hood say? In 1953 they would just say 3100 or whatever, without the word Chevrolet.
The ID plate on the door jamb should be blue with silver letters on a 1953 truck. Older ones are black w/silver.
Your speedometer should be a 90mph one if it's a '53. 80 mph on '51 and older.
