I need the pump/block thing the brake lines screw into up behind the passenger headlight. Anyone have one sitting around?
I have one from a 2002 wrx. I would guess they are interchangeable .. maybe someone else can chime in.
I'm not sure about the 04 STI in particular, but the ABS pumps are totally different between 02 WRX and 06 STI. WRXs have "ABS" and STIs have "SuperSport ABS", and they work very differently. ~Dan