If i would take my subaru anywhere, i would go to S&R performance.. They did an uego bung weld for me that was like god himself joined the pieces of metal. Perfect. They also diagnosed a small coolant leak i had at the same time. $50 out the door.

S&R For the win, but only if you must seek external help. I would at least try it yourself, there is like 6 bolts holding on the headers, and the rest is pie.

People on the forums here do good work too, i would trust them as well b/c this is a super easy install and most of them here do their own work.