My bad, I did not ask the question properly, what I meant was how do you swap the transparent male bodies of the male npcs using the arc editor, with already installed textures in the mod pack?
Male characters default transparent bodies can be replaced but you need to know the basics of modding and how to edit menus. All male characters are predefined presets consisting of a mbody and mhead combo with fat and colour variations. To replace them it's best if you knew the exact menu file that the onscreen male character uses and make a modded copy of it and put it in the Mod folder. Just by searching "man" or better "_i_man" in SybarisArcEditor you'll find a whole list of menu files for the male characters presets used in different events. Edit that menu and change the mbody and mhead menus with the ones from an existing male mod of your choice.
Another way to change male bodies is to replace mbody and mhead model files. Default master body is mbody.model.
Other mob male characters use mbody001.model up to mbody006.model, including the mbody.model.
Default uncensored models are in Mod\_BODY\_UNCENSOR\Male Uncensor\manTNP or in [CMI] Uncensor depending on what you use. Make a backup of the default uncensored models in case you want to restore the defaults.
Heads are named mhead000 to mhead012.model (maybe more)
Replacing npc models with random mods will lead to weird male presets with random head-body combos along gameplay which is why it's better to use the menu replacemet method instead if you can. This could only work well if you use few mbody-mhead combos for all male characters.
Beware that changes might cause the game to spam errors or break your savedata if you want to revert to defaults by removing the mods. Backup your save if you want to experiment.
It is also possible to overlay the hired maids presets and make them mimic the men movement using XtMasterSlave plugin. Downside is that it's hard to get proper alignment and the change is not permanent.
I don't think it will be easy to swap npc bodies with the default uncensored textured mbodies because theese models don't have a penis of their own. It is attached separately in the mbody menu. It could be done by merging the mbody and penis model in blender or by editing the npc menu.