Just to be sure... the sway bar that fits the '02-'03s will fit the '04 wagons, right?

Sway bar or tower brace?

rear sway bar. For that matter, tower brace, too. And what about front sway bars/tower braces?

As far as I know the 04's have different strut top mounts, so the strut tower bars wouldn't bolt up. I think the fronts might be the same and it's just the backs that are different though. I'm not sure though so don't take my sord for it.

Anybody know for sure? I need to beef up my rear end.

Contact a dealership?

Local Subaru dealership didn't know, either.

Contact Sean over at Rallitek.com. He should be able to tell you if they will fit or not. I don't know if they're already making products for the 04s or not, but I'm sure they've gotten a couple in for tuning.

I maybe late on this but, I have a 17mm WRX rear sway bar from a 2004 on my 2003 TS. Installed it myself. Fits like a glove.

Good to know. I think the "The suspension is different so they won't fit" argument is a myth. Seems like everything fits everybody, except with STi models and front swaybars.