Once the value of A340 is low enough I am sure that a freight conversion will be considered.
chornedsnorkack, I am not sure what you mean about the DC8-71 including a wing change. The 71 retains the original, short wing, but has a similar pylon attachment to the -63/73, ie under slung, not wrap around like the original -61. Due to aerodynamic differences between the -61 & -63 wing the -73 engines have strakes on the engine intakes.