I recently modded some 08 STi seats to fit my FXT, so I have a few things I don't need anymore, but may be useful to others.
What I have:
Driver and passenger seat airbag units with plugs
Driver seat tracks (no base)
Entire Passenger seat base with tracks, and an intact oc3 system (passenger detection system)
I'm not sure what to price it at, so PM me your offers!
passenger seat with oc3 unit
bottom side of passenger seat:
Driver seat tracks and both airbag units: