There's no listing it as stereo, but if you total running time is 102mn, and it's the full screen then it features the spatialised mono to stereo conversion. I'm sure many will be happy seing it preserved. It's the version where there's not the picture of laserdisc gold disc on the front cover. I think it's the one you have. If you can rip it to usb, that would be insanely awesome, I could retime it to the current disc.
The fake Chase stereo mix LD is that one. Cameron had it redone later on with the correct speed of the film, and with correct mono track without enhancement.