G'day
Talemon,
to PackardInfo.
Information regarding Packard Engine Serial Numbers can be found in the Packard Engine Serial Numbers Reference document in the Literature Archive section of this Website. I have extracted the information you're after and attached it below.
Plus being very interested in Model A Fords, my first car was a Model A, I'm more than curious to see how your Packard Engine swap goes. Please keep us posted.
EDIT - Click on image to enlarge it.
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