what Grigg said, zero reason to swap those transmissions unless the 460 is in rough shape, just remove and blank the PTO and carry on to swapping the rear, if you can find one that will fit
"When we tug a single thing in nature, we find it attached to the rest of the world" ~ John Muir "When we tug a single thing on an old truck, we find it falls off" ~ me Some TF series details & TF heater pics