SSE Misaligned head and body in both OutfitStudio and Blender

[DalinarGeneral]

I'd like to use Lilu Follower in my game. However, I have two issues with it. First, the SSE version on the linked web site has seams at the hands and feet. Second, it uses a UNP-based body (I think) and I want a RaceMenu BodyGen-compatible body because that's what I use for the rest of the NPCs and followers in my game. So, I was thinking of switching the body to CBBE SE (I know this will create a texture mismatch; I plan to learn how to deal with that later possibly by just replacing all textures with Bijin Skins or similar, assuming that doesn't ruin the head texture on the custom high poly head). When I did this by just replacing the nif in the mod's meshes folder, it created a slight mismatch at the front and back of the neck (incidentally, I found that if you pan the camera to clip through the hair, the original follower has rear neck clipping even with the intended body type).

 

I used to be somewhat decent at Blender about 10 years or so ago, so I was thinking of slightly shifting the neck vertices of the head mesh to align with those of the CBBE body. When I try to export the head and body in Outfit Studio, or import them into Blender, the hair is in the right place relative to the body but the head is way off below. How can I get the head to export in the correct relative position so that I can align the vertices correctly?

 

Thanks!