Superb Survivors mod for Project Zomboid is a community-driven project that aims to keep the mod up-to-date with the latest game versions. It's important to note that this is an unofficial project, and as such, it may not always be consistently updated.
To install this mod, you would need to install the original mod from Steam, make a copy of the "Superb-Survivors" folder, and then download this fork into a unique location. The client, server, and shared folders from this fork should be copied to where the copy of the original mod was created in the media\lua folder. Any new versions of the mod released on Steam will not affect the local copy/modified version.
Steam-source: