And I don't really have all the graphics I want from HGSS. For example, I don't have a Prof. Rowan sprite.
As well, I don't plan to change any Pokemon stat data, however, locations in which they are obtained may classify them as "hacked". I'd use AS Pokemon with caution.
I Just read bulbapedia and I was wrong
Why do you need a Professor Rowan Sprite in HGSS? Anyway