Another newb question, u-joint wear

[beerbeer95648]

Pulled my transfer case last week due to a blown bearing that f***ed the case. While I source a replacement decided to check my u-joints. They are all tight with no perceivable movement. But, one did seem a hair stiff. This is the offender.

Would this normally require replacement even if things are tight (scoring at top of pic)? I assume so.

This is the ujoint at the slip yolk next to the transfer case, anyone have a replacement part number? Having a hard time finding a site that explicitly calls out this joint? Are they all the same along the rear driveline?