As I recall, the precise delay values for Belbucus' audio tracks were 1.017s for Star Wars, 0.948s for Empire, and 1.015s for Jedi. This refers to the pcm tracks running at correct speed, and provided a complete synch with the ntsc gout audio. To synch with the pal version, you'd probably want to add the proper amount of silence at the beginning of the track first, and then speed it up after that.
Assuming of course, as Darth Mallwalker points out, that the frame count and timing of this version is identical to the gout.
Now, about the 5.1 audio. I made the edited version mainly for my own use because I like the way it sounds, but clearly an unaltered version would be ideal for projects such as this. I'd have provided one already if I could, but my editing has always been done in stereo and then sent to Satanika for processing, since upmixers do not seem to work on my computer. Accordingly, I've only ever had the final mixes as AC3 files, not the multichannel wavs, so unfortunately it's not a simple matter of editing the changes out again. You could conceivably decode the AC3 to its component channels, put the unchanged sound back in, and then re-encode, but I don't recommend that at all because it will further degrade the sound quality by being twice lossy. Really the only way to do it would be to make a new upmix of the unchanged RotJ 1993 mix and add in my LFE channel, then make a new 5.1 AC3 that way. (The LFE is critical to it being 5.1, otherwise there's no difference from simply using Prologic II in the receiver on the stereo track.)
I reckon I'll have to see if Satanika would be able to lend his services again. dark_jedi also expressed interest in having a non-edited version for his v3 gout project, so clearly there is some demand for it . . .