06 F250 Extended Cab 4x4 5.4

I Have to replace (previously removed) the rear seats, and am curious of options. What models will fit and what are the best (somewhat comfy) without breaking the bank, even at the local junkyards. Also, should I be looking for headrest options? I currently have no bolts or seatbelts either. Thanks

 

Installed 07 rear seat/belts, had to use self-tapping bolts as mine weren't tapped previously.