If you are referring to the ignition coil, it is located on the top of the engine, out in the open, and very easy to replace.
If you follow the spark plug wires from each spark plug, you will find that they all come together at the ignition coil and are all plugged into it.
Before disconnecting anything, draw yourself a picture of where each spark plug wire connects to the coil, because it is very important to connect them in the same locations on the new coil. Then, disconnect the plug wires, disconnect the small electrical plug, and unscrew the screws that hold teh coil to the engine. Installation is the same process in reverse.
Replacing the ignition coil should take about 10 to 15 minutes.
there arent any plug wires on the late model subaru. the coils are bolted down on top of the spark plug holes. If it is a 4 cylinder there are 4 . if it is a 6cyl. there are six. just look down on each side of the engine you will see them. recove the one bolt unplug the coil and there you go. you also remove the spark plug through this hole after you remove the coil. you can put them back in any order
there is most likely a plastic cover over the top of the engine. I have worked on quite a few subaru and the setups are usually the same. most manufacturers are puttin cosmetic covers over the top of the engines now. I have provides an image if a 04 model. the 05 model i provided has the individual coil packs Hope this helps. By the way I did not see the first technician helping you. Give him the credit. His answer seemed similar.
The engine layout on this TURBO model is different than most subarus. I took the cover off minutes after opening the hood yesterday..... The only assistance that will help me needs to be very specific... I'm a backyard mechanic, so I understand the basics, I just don't want to start peeling parts from the engine with no direction.