Replacing a crank shaft questions

Pix please of the crank as above. Sounds like the block casting date is early August, but the assembly date would be sometime after that in the '72 model year. You want to find out if it is internal or external balance. And a damper pix too if you can.

And as said, with undersized journals, you just put in the matching undersized bearings. The 'holes' in the block and rods are the same for all undersized bearings.