Who doesn't need Gargoyle's on their printer? Love the look of this on the Mk3 but could not find an alternative for the Mk4. This will require that you print in PETG per Prusa's part recommendations. I did a color/filament change at the start of the gargoyle. This does require supports. The included gcode files are what I used to print mine.
Replacing the part on the printer is very straight forward - 2 screws on each. I don't think you need it, but I re-ran a calibration of the axis after I replaced them. Printed another model after and it worked perfectly.
Have fun!
The author remixed this model.
I lopped off the Gargoyle and added it to the top left and top right parts from the Prusa printable replacement part catalog (https://www.printables.com/model/451501-mk4mk39-printable-parts/files).