Don't know if this is a legitimate Quad encoded title, but I will say it up-mixes very well using Penteo and this new Japan CD I got.
says it's Produced by Nick Mason & Mixed by Rick Curtain
https://www.discogs.com/Gong-Shamal/release/2762345
May need to run it through the SMv2 also and compare.
View attachment 60026
Have you read/heard somewhere that this was a "stealth" SQ CD, Pup? (I've heard a conversion of the SQ LP, but don't have any notes or memories of it.)