I am also looking for a service manual or at least a website that will provide access to the manual for a 2002 WRX Sport Wagon. I just purchased accessories from SubaruParts.com and it is interesting to note that there are no instructions with the short throw shifter and the instructions that were packaged with the shift knob were in japanese only.
For everyone who owns a 1999 or older Subaru, if you point and click on www.alldatadiy.com
, you can purchase a one year subscription for access to a service manual for $25. Unfortunately, only professional mechanics that subscribe to the entire service get access to the newest manuals.
Steve Galper, MD