"Is there a way to make clothes designed for earlier versions of Victoria or Michael fit V3 or M3?" Yes. Use "The Tailor" at DAZ, and the tutorials in their tutorial section. "Also, do I understand correctly that the "V3 to V2" option is the Victoria 3 head with the V2 body?" Yes. That's another option for using your old clothes on new figures. V1 and V2 clothing will fit this figure. (And M1 and M2 clothing will fit the "M3 to M2" figure that comes with M3.)