If you don't find one you could look into making your own.
I was looking for one for an '84 Caddy Seville and of course there was nothing available. So I took my trim piece into one of the shops and found one that was close. Then I used a heat gun to soften the plastic and form it to my trim piece. Then a little gluing, shaping, and some paint and it turned out pretty good.
Just another option.