I broke my driver's side vent window hinges replacing the weatherstrip the other day. I tried Dennis Carpenter, and they referred me to LMC Truck.

Here is a link to the product page there (number 5 in the 'Side Window and Molding' section toward the bottom of the page): http://www.lmctruck.com/icatalog/FC/full.aspx?Page=12

They're not cheap, at $19 each x4, plus another $19 in shipping. Just wanted to post this topic in here as well for anyone that it might help.

And yes, the trucks and Pinto's used the exact same pn, but the 74 trucks used a D2FZ with the 72 Pintos, while the 75 and up used a D3FZ. What the difference is, I dunno. I was thinking it might have just been a change in the plastic used, since LMC says 73-79 trucks can use the same part?