I have a stock GM bench, re-covered in black vinyl. It is actually very comfortable...getting a bit sunk in on the driver's side from my fat a$$ though

Makes the truck comfy to ride in on long trips....unless it is hot....my back always gets soaked with sweat b/c the vinyl dosen't breate worth crap.
I plan to just get it re-covered with new foam and a black cloth seat cover eventually. It is just soo comfy and squishy.....not ultra-firm like most seats out of newer vehicles