Download F150 Supercab Back Seat Removal Background. Found several differing posts on removing the back seat of a 2003 f150 extended cab. I never messed with the seatbelt until i had the seat off because i just had to take off the bottom anchor to put the belt on the just to verify, this is exactly the same on my 2013 xlt supercab (not supercrew).
After a lot of grunting and swearing, the job is done and i can share it here.
For removing the seat bottoms, you grab the front portion of the seat bottoms and pull towards you and up. Fold up the lower portion of the seat. It runs the full length of your rear seat and measures 56x13x8 (front) tapering to 6 (back). Be very careful not to scratch your bottom seat cushion.
