Been there, done that.
Grew up with Ford Model A 19??, 1936 Plymouth, 1945 Dodge, 1948 Dodge pickup, 1950 Chevy, 1953 Chrysler, 1955 Willys pickup.
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Oil changes every 1000 miles.
Vacuum wipers that quit on acceleration or hills. Vacuum boosters on fuel pumps: diaphram leaks, and you lay a smoke screen to make the military proud.
Dimmer switch on the floor.
Stick shift on the steering column.
Six volt system, some positive ground, some negative.
Step-on starter switches.
Push button starter switches.
Manual chokes.
Left hand lug nuts on one side of the car.
Turn signals and heaters were options.
Brake lights the size of quarters.
Clocks that never worked.
Flat floor in the front, door to door.
Three-across bench seat in front.
Engine compartment with 2-3 wires visible except spark plug wires. You could almost stand beside the engine.
Spark plug tire inflators.
Oil-bath air cleaners.
Pleated paper oil filters in a heavy metal non-disposable can.
Bumper jacks.
Inner tubes.
Tube repair clamps and patches you lit on fire.
Synchromesh on only the higher gears, or not at all.
Manual chokes.
Radios that had to warm up.
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Bruce