Dual extruder mount with auto bed leveling and 2 fans for Prusa i3 Sunhokey

Dual bowden extruder for Prusa i3 Sunhokey with auto bed leveling. I just designed this project and I'm testing and calibrating dual color printing. I referred to these designs: http://www.thingiverse.com/thing:763804 http://www.thingiverse.com/thing:742947 and http://www.thingiverse.com/thing:817538. Added new X carriage which can fit linear bearings SCS8LUU upgrade: http://www.thingiverse.com/thing:813458.
NOTE: If your Sunhokey 3D printer came with MKS Gen 2Z V 1.1 board you cannot add the