A few related pieces of info regarding posette and textures:

Theres a LOT of hybrids and remaps out there the lion's share of which are for posette. AprilYSH has remapped posette for Victoria 1&2 maps, Pitklad I believe, is the creator of the wonderful NEAena version of posette, also a V2 map wearer, and the many hybrids incorporating posette's body with various other DAZ character heads, most commonly take V1/2 texures as well.

A utility to be aware of if you arent yet is the incredible DAZ Universal Texture Converter. This utility can make a V1/2 version of any V3 map (or just about any other DAZ char if you purchase the appropriate plugin). It does its job REALLY well and if you think of the vast retail V3 texture content out there, then think of the combining of those maps with a V2 wearing hybrid or remap char and the UTC utility, you can see how vast your options really are :)