Your transfer case looks like the one that is in my '62 K10, I believe it is called the Timken 4 shaft. It has provisions for an input at the top front, a PTO at the top rear, two outputs at the bottom rear for tandem axles, and a single output at the bottom front. All outputs rotate in the same direction as the input.
The NAPCO transfer has similar outputs but the front shaft rotates opposite to the input. I don't know which way the PTO output rotates.
