Hi PF_2500!
Staale Loseth made a character for
Posette called the BodyMorpher.
This file contains lots of head and body morphs, also the ones you're looking for. Actually it is made for an altered
Posette with other mapping and other geometries. To work with the original
Posette you'll need to download the DazStudio(!) version BM1mk3-4DS
http://home.online.no/~kjellil/Index-AllStuff.htm Go about 3/4 down the page. (Don't forget to grab the textures for
Posette, still some of the best available)
This morphs are all in one cr2 file. To copy them to your favourite
Posette character, a little application, Morph Manager is very handy. You can get it besides other utilities at
http://www.morphography.uk.vu/utilities.html