I decided to experiment and improve one of my favorite resource packs - Excalibur!
This is an addon for the Excalibur pack that adds simple support for LabPBR (normal maps and parallax) Warning: This PBR is imperfect and may contain bugs and issues. To use it you need the original pack, and of course a properly configured shader pack that uses LabPBR. If nothing has changed after enabling this pack, you've done something wrong. Link to the always up-to-date version:
https://www.mediafire.com/folder/0noy3om2a4dds/Excalibur_justPBR