here's the 50' version of the fourth Godzilla movie. I owned the 200' version back in the day, and watched it quite a few times. the strobing effect that Tsuburaya used in part of the fight was fascinating to watch this way. as I've noted elsewhere, this was a very disappointing movie for me when I was younger, since I expected lots of monster wrestling shenanigans and got a much more serious movie. ah, youth!
this is all Godzilla vs Mothra though, at least they did that right! some of the 8mm versions made some inexplicable decisions as to what to feature.