Mod that replaces textures.

Yes and no. It depends on what you mean. If you simply apply a texture to a model, then no. It will turn out to be something incomprehensible due to the mismatch of the UV maps. But you can manually overlay one texture on another, making the necessary adjustments, distorting it in the right way, etc., in Photoshop. However, it may turn out that it is easier to adjust the existing texture, copying only those areas where it is not possible to achieve similarity by adjusting.