I Tried a V4 to Genesis 3 Conversion... (Patreon)

Original Stephanie Hawk on the left, Genesis 3 on the right.  The V4 muscle morphs aren't that great so I'm considering moving the PFF fighters to the Genesis 3 base.  

This might be the most accurate face transfer I've tried to date.  The only downside is that the tool I used requires you zero out x/y/z scales before export.  So I'd need to manually reapply those by sight to replicate Stephanie's height, reach etc.