Will my slant six starter work on my 440 powered Charger?

Mopar faithful: The starter that was on my 1974 slant six Duster when I bought it is part number 3755900. The number "24" is below this part number. Both of these numbers are stamped on the black motor housing. Is this the correct part number for a Duster built in October of 1973? Does anyone know what the number 24 indicates? And finally, will this starter work on my 1969 440 powered Charger? Thanks!