Oil pickup, oil pan, timing cover, harmonic balancer, water pump, and intake are wrong and must be swapped. The head gaskets are slightly different but can be reused. Of course the flexplate is different too and there are other minor differences depending on year. Basically just strip both to bare shortblocks and put the ranger stuff on the taurus block.
It seems like a lot of trouble to go through when a ranger or areo star 3.0 is allready set up for rear wheel drive application. It would be less trouble to swap in a 4.0 sohc motor and worth the hassle. It is however feasable. The taurus sho 3.0 will not as it's actually a yamaha engine.