Serial numbers are on a plate on the right front door hinge pillar.
6 cylinder on crankcase to rear of distributor. Engine numbers were DAA1001 to DAA546865
Numerical prefix in serial indicates assembly plant as follows:
Tarrytown, New York
St. Louis, Missouri
Kansas City, Missouri
Serial numbers: 2 digit prefix for model year 46=1946
followed by a dash and 4 numbers indicating body type. These 4 numbers could also have a Letter suffix indicating trim or equipment options. Serial numbers for Stylemasters were DJ-1001 to DJ-56896, Serial numbers for Fleetmasters were DK-1001 to DK-58678. All Fleetmaster body type numbers began with 21.