Help Identifying

DentalDart said

-DW 340 225 10409
-FA 40196

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D= 1968 model year
W=Windsor assembly plant
340 = 340 cu in

Not sure about the following:
2251= Day 2251 is Tuesday, September 26, 1967
0409= 409th engine produced that day

FA 40196=?

You might want to get a better look at the numbers maybe some black or white paint in the stampings would help.