Randy, this is EXACTLY what I have for the driver's side, but minus the welded on tabs. And, that is EXACTLY what I was planning to do (weld on some tabs). Both of my flanges on the driver side bracket face the outward toward the drivers door. Yet the holes in the bed are on the other side as if the flange should face the passenger side. I could drill holes in the floor, but welding in proper nuts would be hard, and the hole location would also blast through some structural member underneath. I prefer to not chew through things. when possible!
Sorry I haven't posted pics of mine yet (it's been a busy summer!).
And I've always wondered why I got a slider on the driver seat and NOT on the passenger seat. Was that the factory set up?