Changing culture for factions

[Onkel Tuca]

So, I basically want to change the culture group for some of the factions.
To be more precise, I want to swap Poland-Lithuania and Russia from the Ottoman culture, to the European. Seems more logical to me, and it would make my music mod much more space efficient.

Can this be done?

EDIT: Nevermind, I found it. In factions_tables under db in patch.pack, you have to change the category from sc_european_east to sc_european_south/north/west, in the case of PL and Russia. Simply, the category is bound to the culture group for every faction.