The upgrade components are designed to make the most of the existing parts and allow upgrades if wanted. The motor bracket allows the extruder that formerly was located in the cariage to be hung off the top of the machine frame. With the bowden tube exiting forward horizontal down to the print head
The core part is this below which holds the two extruder heads and funnels the cooling air over their fins.


The supporting metal carriage needs modifying to allow the V6 heads to pass through it.

This clone uses a melzi derived control board, the pinout for this is in the files section. I'm using repetier with a raspberry pi as the print server and the LCD control button thing removed. The configuration file for use as a base when using the repetier firmware configurator tool is also in the files section.

When compiling (needs arduino IDE) the Melzi board is the same as a "Sanguino". when paired with arduino ide 1.6.8, to add sanguino board to the board list, go to File>Preference>Additional Boards Manager URLs, add the link below

https://raw.githubusercontent.com/Lauszus/Sanguino/master/package_lauszus_sanguino_index.json