Converible window stripping?
 

So I'm 17 and just bought a 2000 LX 5spd Convertible. The only thing wrong with it is that on the passenger side the stripping between the two windows is ripped. Where can I buy a replacement from, anywhere besides directly from ford since it'll probably be ridiculously expensive? I don't really know what to call the part so I don't know how to search for it.