Its been around for awhile and has some Great-Free info. A little different then the FSM but very useful when you don't want to sift through 1000's of PDF files for part numbers.
Example
Legacy / 93-97 (95-99) Legacy / GT Model / Normal Suspension / index
http://opposedforces.com/parts/legacy/us_b11/type_4/
Looks harder then it is but this is a great source for on the fly with the need for local software.
http://opposedforces.com/parts/
Select you Model (Legacy)
Select your chassis (USA - B11 '93, October — '99, May) ---- This is known as 95 - 99 BD/BK/BG
Select your trim (2500CC EMPI DOHC NA -> Train -> FULLTIME 4WD -> Transmission -> Manual transmission -> Grade -> GT -> Suspension ->
Normal suspension
Also known as 95-99 EJ25D BD GT
Select your section (Engine -> Cylinder Head (the other choice is a TSB .. tech service bulletin.. other times its model variations or different section)
Select your specific section (#1 Cylinder Head)
This is the explosion diagram breakdown. Most part numbers on the diagram are listed below with full description.
You can click on the part number and see which models this part interchanges with!!!
Example you can see that this item interchanges with the European Forester.
-Chuck