Im gonna guess an ej20t is going to run about $2,000 for the engine and STi is gonna be around $5,000 ish plus labor. And the labor will be higher for the STi engine since its not a plug-n-play conversion. Plus you havent told us shit about the car, do you have axles, harness, transmission, driveshaft, hoses, sensors, etc? Because you'll need those too. This entire post is dumb.