My suggestion would be to seek your answers over on the fetish nightfall release, compared to the 14 pages here think there is around 70 there
As to answer (or try to) your question about replacing components from different creaters my suggestion would be to make a backup of the orginal fetish file and then experiment away! Worse that happens is you lock the game up. Best is you end up with almost exactly what your looking for (works but maybe the skin's will be different /shrug). GL!