Actually the 1980 Latino dub is a merger from two different sources, both of which came to me, unlabelled, audio-only. One or both may have ultimately come from you. Most of it is from a very high quality source that had about three locations where English audio was still present, and those three areas were patched over using a lower-quality source blended with the isolated score to make the transitions more seamless. If you are responsible for either or both of these sources, thank you very much!
EDIT: More details about how this track was assembled can be found here.