I have a Gaylord tonneau cover off my '98 Dak.
I'm not exactly sure what years it'll fit but it's a 6 1/2 ft. bed.
Fifteen years ago, it was over $700 new. I today's world it's close to $1000. No shipping, local pick-up only.
It's in good shape, no cracks and the pistons work. I have keys for it. It needs a repaint and a new rubber gasket.
The price is right!!!