To avoid a difficult window install... I frame out the back window on the el camino to make it stronger and to have an easier time installing the rear window. I made it so the window goes in as a rectangular piece , instead of trying to cut the window to fit around the cage I made these nice solid bead rolled sheets of metal to fit nicely and, give it a meaner heavy metal look.
0:00 RECAP
1:30 measuring back window
2:47 cardboard templates
4:20 transfer to sheet metal
8:00 bead rolling
8:50 final mounting