This tools set is exactly what you need to prepare SOHC or DOHC for removal.
- draining coolant and oil
- disconnecting P/S pump, alternator, AC comressor, wiring
- disconnecting engine from transmission. 2002-2007 WRX / STi require one more, very special tool to do so and if you are a Subaru Tech, you know what I'm talking about.
If your local mechanic tells you different, call me because you took your car to the wrong shop. Another thing: it takes about 2 hours for the Subaru Tech to pull the motor out of the vehicle. If your mechanic is saying different then you are talking to someone who is definitely not familiar with Subaru.