ok, to replace the pulley by yourself without pulling the motor isn't easy. you're going to have to drop the passenger side motor mount to lower the engine, then you're going to have to notch the firewall to reach the bolt on it. after that you're going to have to use an impact gun to get it off, and pray that it does. if it won't come off get a big breaker bar on it, and let the car sit on the breaker bar so it's constantly applying pressure

. after you get it off, just install like normal. hope this helps.