Godzilla vs the devil (1978) unmade kaiju film

Godzilla in hell may have been inspired by the theory of Godzilla vs the devil! going around the Godzilla fan community in 1978. "when Toho Kingdom had a lavish page for Godzilla vs. the Devil in the Cutting Room, and I was disappointed when that vanished and was replaced by a small write-up on the Toho Busters page"