. When I bought the car it had a spun bearing so I got a good deal on it. while the damage to the engine was minimal, I found the hybrid was not built correctly ( combustion chambers not bored to match short block) 
. So long story short, ive been way to picky with parts to complete build anytime soon. so I decided why not drop my ej22t into the wrx while im waiting to finish the hybrid ej257.(the right way). I got onto nasioc and asked if the sti intake manifold would swap to car and was told no. Fair enough. Then I asked if I could just switch out the legacy ecu and run with stock manifold. their response was that the engines are COMPLETELY different 
and no way this engine will work in my sti. Isnt this just a matter of switching everything from obd2 to obd1? I live in an area with no emissions standards so really don't have a lot to worry about with that. my question is How do I make this work. Ive always understood that subies where like legos so I just refuse to believe my 93 engine wont swap over. Both cars are complete and ran before tearing down. Legacy was in need of a new clutch and taillights have a short and wont work. the wrx is 04 sti full swap, tranny brakes, diff, and pretty sure the ecu is sti as well. on another note I wanted to just drop the 22t long block while using the sti's fmic, aps sr40 turbo and clutch. If this is not doable, please I am open minded to any possible solution that doesn't involve using my 2.0l heads as I still need to send them to EQ tuning to be cnc'd or rebuilding the ej22t as I will be doing this as well when I finish the ej257 hybrid. I also have a 97 4eat legacy gt that I can source parts from as well. sorry this is a lot but none of my searches were bringing up anything on this topic. Thanks a head of time, im hoping you can b more helpful than the guys on nasioc 
Particularly I'm confused on which manifolds and heads won't work according to Nasioc, into which cars.