Keith Aiken wrote:
Beginning in 1963, Toho's international sales booklets from the 1960s advertised an English dub of KING KONG VS GODZILLA. The brochures don't specify where the dubbing was produced, but KKvsG is listed alongside the Toho international versions of movies like MATANGO, ATRAGON, WAR OF THE GARAGANTUAS, and EBIRAH while no US versions of the monster/FX movies are offered.

Interesting info there, Keith. It's a shame that International dub of "King Kong vs. Godzilla" can't be released here; however I do have the assumption that Toho's dubbed version would most likely be not too good.