2.5 to 02 wrw swap
 

I have an complete assembled 04 long block that i am putting into a wrx. I already got intake manifold and throttle body as well as the cam position sensor needed for the wrx. I was trying to wire it up and did not even take into consideration the engine harness might be different. Does anyone know to do the entire swap if a 02 wrx engine harness is also needed?? thoughts or links please

I didn't need anything outside of the cam sensor. Is the motor an STi block/heads? You won't hook up the AVCS solenoids in that case of course, or either of the rear cam sensors. But everything else should just plug right in... at least it did on my '02.

I had a complete 04 sti motor including the 04 wiring harness(engine) however several plugs did not match up so i switched engine harnesses. Seems to have everything i need.