There's some mistakes in the beginning of this thread, but whatever it's old. People have figured out a lot in 5 years.
My 95 wrx ej20g swap, engine, trans, harness and ecu, rear diff and lots of extras was $700. 95 fwd coupe rust free from florida was $600. I bought a dp, header, fmic and exhaust for it from ebay. I had most of the awd stuff sitting around, I need a few junkyard parts. Add in shipping and all the stuff I bought and I think I will have about $3500 in the car. I got rid of a lot of unneeded stuff, I think the car will be 2500 lbs or less. Once it's running I think I am going to add sti 550 cc injectors and a Rob chip. 300 whp and 2500 lbs will be fun.
I finished the wiring merge yesterday, it really wasn't a big deal. Strip down both harnesses and merge about 20 wires or so. It took me a few hours.