Help identifying/6

Dart fan said

So the stamp on /6 in my 64 dart is T22 12 27 2
Block casting # 2202857-2

The other block out of parts car , I'm sure motor has been changed
Stamp # 7225R 2 2 2L
Cast 030-13 (?)
Hope this makes scence

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The one in the '64 is a 225 built Dec. 27th 1963 by the second shift. If that is before the SO date on the fender tag, It may very well be the OE mill
Not sure about the second one based on that casting#...............?