I'm using /u/johnniewhiskey 's Cable Chain mod on the Ender 3 Pro. Specifically, the v3 type links.
This package tailors the 10 degree bed mount clip by Ryguitar07's to be compatible with the new links. I have also shortened the offset of the original cableChain_40MountSide_v2 to compensate for the space taken by the angled mount.
The bed clip just goes over the existing stock base mount. Unclip the stock top and remove the zip tie. This new clip should snap in place. Ideally re-secure with a zip tie.
The side mount is too short to be a press-fit like the original. You'll need to take off the end cover from the 4040 rail and slide this piece in.