Not sure where I am missing the info but not seeing the proper installation instructions for any of the files. I saw the ship files were removed so not sure if I am even supposed to be trying to use SSTULabs at the moment. If someone has a second I appreciate it.

This works just like very other mod.
Add the GameData/SSTU folder from the .zip to your KSP/GameData folder. It should end up with KSP/GameData/SSTU/.