My nephews 1991 Dodge Ram W250 LE, 360 4 speed, it has low miles for the year, but the top of the cab is basically rusted away above the windshield.
He inherited the truck when my dad passed away a few years ago.
Looks like he worked the hell out of that truck. Rust in that area of the roof is very common. I've seen everything from proper repairs to tar and duct tape.