It uses the chains from the Anet-a8 version by Starwhooper
https://www.thingiverse.com/thing:1905344
With the Z-axis chain mounted to the extended box for a raspberry PI in its ''original'' case. With an extra room for all the extra cables.
Link of amazon:
https://www.amazon.nl/gp/product/B07MX5B8HH/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8&psc=1
You need to extend all the wires for this mod.
I did not extend the X-stepper motor cable yet, but this is also an option.
I hope you guys do a better job at cable management than I did and enjoy the mod.
The author remixed this model.
Made it for a Anycubic mega zero 2.0