The cab area from Arch's Coach

Ever wonder what the GMC looks like without that plastic headliner? Now you know - Center

And a closer view of the left side of the cab. Notice the antenna wiring running up the center. IF you tried to pull the antenna lead you know it doesn't budge. The insulation is why. Driver's closeup

Right side closeup. The common "fogging" of the windshield along the center support can be seen in this picture too.