Specifically from this mod (you still need the mod for partial functionality): https://www.nexusmods.com/skyrim/mods/107460   I'm leaving this here in case anyone wants to make these compatible with sex mods. The penis mesh is a modified version of the "legacy" werewolf penis mesh from More Nasty Creatures and the textures are a modified blend of the giant penis and legacy werewolf penis textures. The meshes are not rigged to any kind of skeleton I have decided to leave that up to whoe