Edward, they do exist on 2000 engines (not on Flavias) and are on inlet valve guides only. They are in the parts book, shown clearly in TAV 1, item 21. Try Cavalitto for parts. Rgds - Colin.

Flavia 2000 used some of the same colours as the early Flavias and the 2000s (see attachment - the bianco is open at the bottom with contamination from the blue sample on top of it when stored). Assuming your car is the Bianco rather than the Avorio, then the nearest colour is:- Spies & Hecker 2...