I have a 1998 Impreza that I'm thinking about buying, it only has 86,xxx miles on it with the 2.2L, The question I have is If I get it I was going to do the timing belt, water pump and tennioners on it since it's close to that 90,000 mark and with it being an interference engine I rather be safe then sorry.. Anyhow I was wondering since I have it apart should I do the head gaskets, or just leave them alone and run her 

2.2? I'd leave em alone unless there is signs of problem.

Yes, leave them unless they are leaking.

 

Also do the oil pump screws and cam and crank seals.

My 2.2 outback sport was leaking on heads kept pushing coolant out overflow i got it up to temp and retorqued all the head blots and it stoped leaking goto love the 2.2

never replace EJ22 headgaskets unless they are blown.  they don't blow unless they've been overheated.

 

yes get one of the gates kits on amazon now for like $130, great deal with new tensioner, pulleys, and belt.  the pulleys are generally not in good shape by now.

 

reseal the oil pump, tigthen the backing plate screws on the oil pump, use a SUbaru water pump gasket (the aftermarkets are flimsy cardboard).

don't get a much simpler 100,000 miles.