The author remixed this model.
This will require a Creality style limit switch board such as the one provided in the link here. I have a ton of these and just makes the transition easy with no soldering.
Amazon Link for switch
I used a couple of M3 X 6 BHSCs but some self tappers would work as well.
Mounts to the same spot as the original with 2 - M3 X 30 SHCS