Dual Extruder Mount for Prusa I3 Rework X Carriage

This is a Dual Extruder Mount designed to bolt into the Prusa I3 Rework X-Carriage in place of the stock extruder mount (designed for 2 bowden style extruder drives mounted on the frame). The design contains support for Dual 40mm Fans attached via Fan Shroud and an optional mount for a capacitive or inductive proximity sensor. This should work with the standard inexpensive J-Head Style Hot Ends. Not sure of exact version see picture for comparison.