The E3D V6 is so much more reliable than the Mk8 Hotend. A huge upgrade. The only Vitamins that are needed was the V6, everything else is printed. For the rest of the extruder, use the original Prusa i3 Mk2 parts (https://www.printables.com/model/88236-i3-mk2-printable-parts#preview.file.9UoRm).
The author remixed this model.
The mount for the original Mk8 GeeetechExtruder was attached to the Mk3 Extruder Body.