I have laid hands on the T2 Fullrate DTS track based on the CDS theatrical mix and am synching it to the theatrical edition of the 2015 BluRay right now (as it is actually the last release with almost no digital filtering / DNR, and no revisionist CGI).
Oddly, it doesn’t sync with it (sometimes the asynchronity is forwards, sometimes backwards). I realigned the parts as well I could. Will test it some more and then make a DTS-HDMA track out of it.
Also, I got hands on the German theatrical LD PCM stereo track (which I am also synching to the 2015 Blu now) based on the same CDS mix.