Since my last post i see djmasturbeat did a custom blu ray of the original pre Disney dub in high quality LPCM, but included the Disney dub from 1998 in the same low bitrate as the DVD, and 5.1. That custom blu ray was produced 7 years ago and i have no idea if it was ever widely shared.

What bitrate would the stereo PCM track be in on the 1998 laserdisc?

I’m unsure on the current rules on custom blu ray releases with commercially available video but combined with commercially unavailable or out of print audio. So i will cease to talk about such things.