1991 Chevrolet K1500 Sliding Window Vertical Sections

[14GMCZ71]

I own a '91 Chevrolet K1500 with the OEM rear sliding window. The two center vertical sections on the sliding window are missing.

One of these sections has the locking clip/tab and the other a "nub" for the clip/tab to snap in on. I don't know if someone was trying

to break into the truck and these were taken but I could not find them anywhere on the ground or in the cab.

 

Any chance someone has a broken sliding window I can purchase these parts off of? Let me know. Thanks!