I got a 89' 2 door GL hatchback EA82 and I am wanting to swap it for something with more power. My car is a 4 speed so I want to swap the trans while I am at it. I just got a 2004 manual forester transmission and I am deliberating about what motor to go for. There is a auto subie with a 2.2 for 300 dollars and lowish miles near by which is appealing, but I have heard that it is harder to find wiring diagrams for the OBD1 cars. As I understand it the hardest part of the swap is the wiring, so should I try to look for a newer 2.2 with OBD2? There is also a newer donor with a 2.5 nearby, but it seems like most people avoid swapping the 2.5 because of the head gaskets?