Please note, that if you want to fit a Voron M4 on a stock Ender 3, you'll need to print the _mirror.stl. You'll also need to mirror these parts, as they have been adapted from the regular model.
So be sure to triple check all orientations before printing.
The things I changed:
My changes can be found here https://cad.onshape.com/documents/aebb5a503501c1e0753978de/w/af819c96ea3863e927b046ae/e/5372687a3d78e0b1bb9de31f. Feel free to adapt it to your needs. After all, it is GPL licensed :)
For print settings and orientations, use the same as the official Voron M4 manual suggests.
The author remixed this model.