Witch With Flying Head

Does anyone know if the 1977 Hong Kong movie “Witch With Flying Head” is available on video? It’s about a woman who is cursed to become a penanggalan, which is a type of Malaysian vampire. As the title indicates, a penanggalan’s head detaches from her body and flies around attacking people. Not only that, but the internal organs and intestines hang from the head while it flies! Naturally, my first response was “I have to see that on film!”