So I picked up a 2003 wrx a couple weeks ago. Nice car just needs engine rebuild, replace or upgrade. So many ways to go and I am not sure on a few options. I have a 2003 jdm 2.0 STI available 45K as stated by seller. engine, trans, ecu and harness available but am not sure what I would have to change to go this route. I am guessing it is not a simple drop it in plug it in and go deal. I am thinking new oem short block and heads at a crazy cost of $3300.00 plus related assembly cost, gaskets, belts oil pump etc. I like the deal on the JDM complete set up at $2900.00 but do not know what I would need to do to get it running correctly.
Any thoughts or info would be great.