Predictably, the Youtube upload of the 1989 film was taken down, but I ended up stumbling upon another upload of it from web searching, put up on March 2025 on... Facebook, of all places:
https://www.facebook.com/61564434071...2517382668233/
(and if you have headphones, only your right ear will enjoy the upload)
The anthology series Wansapanatym (which has been mentioned a scant few times on this forum in the past decade) also did its own remake of the film in 2010, starring Cristine Reyes.
The episode in question has been officially uploaded on Youtube in 2024:
https://youtu.be/ZSzK_fcAUyc
The on-screen TF scenes there are at:
-6:06 (shifting eyes)
-7:21 (morph)
-24:52 (shifting eyes)
-30:20 (shrinking into clothes)
-33:33 (morph)
-37:20 (hallucinatory face morph)
-41:30 (subtle skin change then poof)
-and a poof revert at 43:33 (every other revert is off-screen)
Lastly, I chanced upon two more episodes of the 2011 series with TFs through Youtube search:
-December 1, 2011:
https://youtu.be/PXSPV9cl0Eg?t=2m30s (framed to show only her clothes falling from shrinking)
-December 2, 2011:
https://youtu.be/mwddGMrxMyI?t=9m26s (revert)
Alas, the URL shown in the watermark has been a dead site since 2013, and what little the Internet Archive saved of it didn't have anything about Kokak. For the time being, the 2011 series remains partially lost media.