A great customer of ours made an amazing write-up on how to guide that is available via IFIXIT.
His guide documents how to replace the seats in a 1999 Ford F250 F350 F450 Super Duty with the newer style 2011 - 2016 Seats.
You can see all of the seats you can swap into your older super duty here!
Click Here To View The Super Duty Seat Swap Guide by JodyNoles
Before & After