I am having trouble finding the rear windshield seal for my 1980 300sd w116. I have already ordered the front windhield seal, but have had no luck finding one for the rear, and it is much needed. Any insight on where to find it would be appreciated...

__________________
__________________________________________
1987 300D(Erma)- #14 head, 193k
2003 TDI Beetle sold
1985 300sd sold
1987 300D(Ursala)- #14 head, 157k when sold
1987 300D(Wilbur)- #14head, 356,000+miles, sold after 7 days of owning it.
1992mercedes 300d- totaled and in a junk yard somewhere..
1983 mercedes 300sd- scrapped
1980 mercedes 300sd first mercedes diesel-sold