Not for Gen 6 what? It would be fine (as in, the savefile/Pokemon will still be legal)? Or it's not possible to RNG? From what I can gather it's likely possible utilizing PKMN-NTR and 3DSRNGTool but I'm not quite sure how to get it working. Documentation is excessively poor.
Title. I really want a specific TID but RNG abuse doesn't seem to work on my 3DS.