I took these pictures!
And I actually went to see this TA22 when it was for sale about 2 years ago. Subsequently I meet the guy that ended up buying it, and we meet up for drives every so often...
Anyway, to answer your question.
Those are very slim aftermarket flares in black plastic.
Apparently the previous owner had them produced especially for his car many years ago. He found all the other options available too big. To achieve a more subtle flair he simply had his own produced...
It's not what you drive - it's how you drive it...
JDM '77 Toyota Trueno 1600GT Sprinter (TE61)
+ a handful of classic BMW's from the 60's and 70's.