Door glass can be a pain ,I took my old ones to a auto glass shop and had them cut new ones right off the old ones and new vent glass so they were the same as the ones that came with the truck ,also I just got some tinted glass windshield glass from Clasic Parts and compaired them to the old ones and they were the same the rear glass is the only glass left on the truck thats original some guys have found that some of the repo door glass is cut to wide and will not go up and down easy so if you get new glass always compair it to the original stuff.

Most auto glass shops will cut you new glass off the old one,then you know it will fit.

Pete