The only issues with compatibility are push vs pull type clutch on the 5 speed trans. So you need to find out which type you have, replace with the same type and make sure you get the correct clutch for it. The other compatibility issue is with the 6 speed swap into 5 speed car as they require other parts to make them work. Try searching Subaru trans code list in google. Look for one from RalliSpec. They have the codes broken down into years and clutch type. It's a lot of work to switch from one type to the other.