Summary

UPDATE - 20AUG2019@1513: Added a BLTouch mount at request of a friend. I don't have a BLTouch, so this is untested at this point. Will update when properly tested for fit and function.

I reinforced the screw holes and changed some of the tolerances to let the motor fit easier. Currently in use on an Ender 3 and CR-10 here at The Messy Workbench.

INSTALLATION:
As you can see in the pictures, it mounts to the existing hotend carriage using the existing hardware. You can also use the stock extruder assembly or the one of your preference (I prefer the BantamFeeder, linked below). Again, using the stock screws. The only modification needed is the lengthen the extruder motor wires by approximately 12 inches.

Cut down the PTFE tubing to be a tight fit with little or no tubing showing between the couplers (as shown in the pictures). It should be compressed tightly when your extruder is bolted in place.