How do I identify my Slant 6?

I have a slant 6 engine that I got when I purchased an old '62 Dodge Lancer that I am going to restore. I found the casting number on the side of the block, and know it is from 64-75, but I do not know specifically what year it is? I have 2 pictures I will post. one is the block casting, and the other is a stamped number I found on the block by the head. Any help is greatly appreciated. PXL_20220125_151433724.jpg PXL_20220126_223545814.jpg