A quick update: been working on installing the rear window and sound deadener/insulation so that i can install the gas tank. I used the peal and seal brand that was recommended in a forum post. It's a thin, aluminum and rubber strip. It cuts easily with tin snips, has adhesive already applied and goes on with little difficulty. I also used a wallpaper roller and a window gasket installation stick to firmly adhere the strips to the truck. I like it, but admit the sound deadening won't be as much as a thicker rubber mat would be. Having said that, it definitely did reduce the sound levels when tapping on the outside of the truck and shutting the doors.
The rear window is almost completely installed. The gasket and glass are in place with appropriate glass setting compound and sealant. The locking strip is almost completely installed. That, has been a difficult process. I'll post a pic of the rear window when it's done and cleaned up.
