As others have mentioned I would do the belt and associated pullys and idler. Plus thermostat and tensioner. Good time to inspect the water pump and cam seals. Also replace the crankshaft oil seal for sure that's an easy one to remove with the right seal puller. The cam seals are a PIA so only do those if they are leaking. If you have the right tools, knowledge and patience this job isn't hard to do. If you pay someone get some quotes. You can get significant discounts on subaru genuine parts from online subaru parts houses.
Google the job there is a lot of good info and check youtube
600 is a fair price
Last edited by montanasuby; 03-07-2013 at 08:53 PM.
Reason: Added parts