>>536765186
chinamer replacers with brelyna buns here https://www.nexusmods.com/skyrimspecialedition/mods/118107

just replacing an npc's hair might not be too difficult but I haven't into doing so myself yet
I think you can just do it in nifskope with their facegen mesh or maybe even outfit studio
the model/part names might need to remain the same so the ck doesn't freak but it could just werk by simply deleting the old hair and dropping the new one in
or you can put a wig on their outfit or throw one at them with spid if you have one; there could be other ways as well

I believe just assigning a hair in xedit/ck won't werk because the facegen mesh would need to be regenerated in ck and most replacer facegens are generated in racemenu