Newport68

I am in need of trim clips that hold on the rocker panel trim on my 1968 Newport 4 door.... finally got a paint job and am ready to replace the rocker panel trim that my son destroyed in his first automotive mishap (love ya son) but the clips are Plastic and brittle and I have looked at other threads here but have not been able to figure this part out....
I have followed several links to manufacturers but cant seem to find them...
anyone out there familiar with these?