For info on what comes with the 767 Captain II: https://captainsim.net/products/y767/y763/

Here you can see that it comes with GlaCS:

FOR P3D4 AND P3D5

The 767-300ER BASE PACK delivers highly detailed and accurate digital replica of the Boeing 767-300ER wearing Captain Sim House livery.

COCKPIT
  • Functional flight deck loaded with advanced systems simulation (FMC/LNAV/VNAV/WXR/EGPWS etc)
  • Cockpit states, PAX and payload configuration and management via FMC
  • High resolution textures
  • Improved lighting (all times of day)
  • 20 aux 2D panels
  • Custom views
  • GlaCS (glass rain effects)