I still wonder why Chevrolet Shop Manuals from 1947 onwards (in Advance-Design trucks) showed the following information on the UNIT SERIAL NUMBER LOCATIONS pages:

"Generator serial and model number are located on a metal plate staked on the generator body just forward of armature terminal."
[metal plate is shown]

"Starter motor serial number and model number are located on starting motor body just below the starter switch."
[metal plate is shown]

"Ignition distributor serial and model number are located on the distributor breaker plate which is under the distributor cap."
[codes are shown on the breaker plate inside the distributor]