When I played that other game, I liked to only use a different player and group window, nothing else.
Do single pieces of UI work here too? Or do I need to get a whole set that is tweaked for SOD?
I've been able to switch out single UI pieces successfully here (ie. get complete UI xx and get the charwindow / target ring from yy). The only pieces you would need to worry about are the song and buff windows, some get screwed up on SoD but there are a good amount that work