Hi,
I just bought a 87 F-150 regular cab. It appears that the whole rear window is supposed to slide down. The thing is that it is propped up with the lug wrench. My question is, is this a common option and where can I get parts to fix it? Thanks.

 

Sliding rear windows are starting to gain popularity. I mean, its suprising it hasn't! Not like it can be that hard to make the rear window slide down. As far as parts go, good luck!