After printing Seltix's top motor mount for my Geeetech A10 (https://www.thingiverse.com/thing:3724186) I needed to change the position of my spool holder to align it with the extruder motor. You'll need 2 more 20mm M3 screws and nuts but it's really strong.
Probably works for the Ender 3 and CR10 printers too since they share many similarities
The author marked this model as their own original creation.