Spiritomb is not version exclusive and can be found in 3 locations on the North Province.
The first one is East of the Socarrat Trail head there and you should find the Spiritomb.
The next one is South of the Glaseado Gym at the ruins. You should find the Spiritomb there.
The last one is East of the river. Look for the sliver of rocks on the map. It should be there.
Be wary, because it can carry Memento.
Good luck and I hoped I helped.