I had trouble fitting the 5245 loader to the 5718, the difference between mounting points was more than the 12cm with of the cylinder heads. This leads me to believe that the 6011 and later rear ends were 2 cm longer... ?? But im not sure.
Anyways, it will bolt right up, and you can put the gearlever on that transmission too. But you might have to modify the cab mounts a wee bit.