throw the contents of the folder into the root files with replacement! \steamapps\common\Postal III.
For the time being, the community was able to get the Beta model of the Dude, and after a while the Alpha version was available to a limited circle of people, from which there was a model, but no textures, a modder named Drive669 was able to make fan-made textures for it, and for many years original textures drawn in haste were not found until the build of the game for 2007 was leaked, where I, having dug into the very depths of the build files, was ABLE TO FIND THE VERY ORIGINAL TEXTURES and now I present them to you here. Go for it!