Install:

Place the folder "ar6c" into:
mods/update/x64/dlcpacks

Add: <Item>dlcpacks:/ar6c/</Item>
to mods/update/update.rpf/common/data/dlclist.xml
You can do this by right clicking on dlclist.xml in OpenIV
and selecting 'edit', or by pressing Ctrl+Enter.

Spawn Name: ar6c