Yep, I put one of the 1998 WRX seats from my RS Liberty in the KE the other weekend for shits and giggles and the back of the seat is ok but if you use the WRX rails then you end up with it very high at the front which would make it hard to get your legs under the steering wheel. Might be worth it if you could pic up a set really cheap but there is a little bit of stuffing around. Also with the KE the wider top hits on the B-Pillar unless you recline it back a fair way.

Cheers
Paul