Yes it is an "off-the-shelf" avisynth script used for 8mm restoration. It's just had a few of the parameters tweaked.
Making the clips available without the original comparison is something I could do but...
I don't own the blu-rays and so these are from a re-encoded 720p source grabbed from the innernets so I think it would be best if someone interested in doing a restoration of these took a look here and recreated the results themself with a higher quality source clip.