Remembering this thread, I came across this post:

ChainsawAsh said:
...

Nevermind, I got it - it's burning now.

And for the record I used the nonanamorphic GOUT - I'm going to try to reencode this version later on for anamorphic.

--edit again--

Oddly enough, the forced subtitle tag only worked on 1 of the 3 players I tested it on. Slightly inconvenient.

If you can find this disc you burned, all you need to do is extract the audio stream, and you will have retrieved the '77 restored mono mix.