So I have this wagon I affectionately call "cancer". It had an EJ20K STI swap. I bought the engine from a JDM importer and it came with a spun bearing. They didn't offer any solutions so it'll have to be replaced. I want to put an MY01 2.5RS engine in it with full exhaust, Delta cams, Ganz style intake and the MY01 ecu with the Crawford Performance reflash. I have an extra MY01 wiring harness from my other car. How difficult would it be to just use that harness and replace the L/version 3 STI harness? Then just buy a lightly used EJ25 engine. Voilą!
I don't want another EJ20K engine. I want a stockish NA Subaru motor with easy to find parts, good gas mileage and wicked reliability. If you want a turbo L buy my old engine and get down. I'm too old and grumpy to deal with JDM parts anymore.