The sync is done! If you PM'd me recently about this project (Criterion laserdisc audio for 4K Blu-ray video) I'll be getting back to you with a link - if anyone else wants it just give me a shout.
I've spliced on the sound for the opening/closing MGM logos so the track can be used as-is (and I know Andrea likes the lion's roar ;-) ) but I'd seriously recommend using tsMuxer to mux in the new track, while setting the following times for cutting under 'split & cut':
Start 15.00 secs
End 6192.00 secs
This will cleanly remove the MGM stuff so the movie starts with the Orion logo (as is good and proper).
Special thanks to zeropc for the original rips, and to everyone who helped out with the links!