Rain Jur: I'd gladly supply you the unitypackage for redistribution. This'll be my last attempt to get a reaction here.
My final comment on this: In its current state (1.3.3), this requires expert knowledge in vcc unity to fix up.
From my last post, I've updated to a free script, that references objects and automatically will display whatever replacement penetrator is chosen. I also replaced the placeholder to be a generic cylinder. Keeps the prefab slim and avoids any rights violations. (FYI: My own package does not contain the Portal-Clothing items).
My own version now only requires to drop the desired mesh into the "Penis" folder (remove rotations on mesh&armature, then rotate the parent), adjust the Locations (mesh, In/Out), move the parent constraint targets to the desired locations and replace an animation for open mouth.
So far it seems to me, that this project was abandoned. I see no way how I could distribute my own update to anyone who bought this, without the creator getting into contact.