I just bought a 2004 WRX Wagon with 160k on the clock. It looks like it's been maintained pretty well, drives great so far. What do you guys recommend as maintenance at this point? I might try to contact the previous owner to see what has been done on the car (HGs, t-belt, etc) but otherwise what should I do first? I'm thinking spark plugs, replacing diff oils and transmission oil. I'd also like to put a non-cat uppipe on there to get some better spool up and prevent it from fragmenting and shooting through the turbo.
Tires are new Continental Extreme Contact DWS, so no worries there... The acc belts look to be in good condition.