I created bowden x carriage for prusa mendel so it can fit 2 separate

I created bowden x carriage for prusa mendel so it can fit 2 separate carriages, having belts on both sides.
x-carriage: http://www.thingiverse.com/thing:124255
double X belt drives: http://www.thingiverse.com/thing:128514
I need to build second prusa mendel to test this, work in progress.