I’ve just uploaded a set of audio files for the GOUT version of Empire featuring the 1997 Special Edition audio mix in DTS 5.1 channel sound. I have edited each audio file to play in sync with the following presentations:

Harmy’s The Empire Strikes Back Despecialized Edition 2.0
Team Negative1 - The Empire Strikes Back 1980 - 35mm Theatrical Version (aka, Renegade Grindhouse ESB)

To patch over certain GOUT footages where the SE audio would be inappropriate, I’ve used the film’s 1983 theatrical mix found in the 5.1 channel DTS audio stream of the Despecialized Edition. So, these audio files are 98.41% SE97 audio and 1.59% of GOUT audio.

The Special Edition mix is sourced from CapableMetal’s DTS file that was made from a set of Cinema DTS-CD ROM discs from the collection of Jetrell Fo. The data from the discs was extracted to a set of 6 PCM mono wave files representing the film’s surround soundtrack. Each audio file was processed and sync’d to fit TB broadcasts of the SE97 edition by CapableMetal, so, the SE97 mix presented in this audio file is from his work and I appreciate his effort and for his sharing, as well as, to Jetrell Fo for acquiring the discs.

FAQ:

Wouldn’t one audio file work with both the DE 2.0 and Grindhouse?

Well, let me start-off by saying that both videos are different in length.
The Renegade Grindhouse ESB is a scan of a theatrical release print and that print has missing frames from the GOUT version. By the time you get to an hour and 44 minutes into the movie (after the lightsaber duel at the carbon freeze chamber), 3 and a quarter seconds worth of footage would be missing from the print.
The Despecialized Edition runs over a minute and a half longer then the Grindhouse. Not only does this edition have the GOUT version uncut, but after the film’s official credits are done, a set of credits for this edition are displayed that add-on to the video’s length.
So, one audio file will not work for both releases because the audio will not be in good sync with one of the videos. That is why I’ve prepared an audio file for each version.

Kk650 released his color regrade of this film with the Cinema DTS Special Edition audio. Could I just mux that audio to either one of the said videos?

I suppose you could. As I do not have kk650 video, I can not say for certain. You would have to check the length of both kk650’s video and Harmy’s. If there is a difference, you would have to play with the audio delay to get a good sync. Here is a suggestion: Cue up both videos to the first frame where the Star Wars logo image appears, get the timecode position of that frame from both videos, calculate the difference from the timecode positions, and use that value–in hh:mm: ss:mmm—in your muxer’s delay adjuster. If it works out for you, then you do not need my DE audio file. If you do not want to do all that work, my file has done it for you.
However, for the Grindhouse version, I would bet that kk650’s audio would not be in good sync, especially by the time that video reaches the hour and 3 quarter mark because of the release print’s missing frames.

Enjoy.