Some tips on replacing an EZ30 and 4EAT in a 2002 Outback (all stock):
Move the large AC line along the firewall out of the way. Managed to pinch that a bit between the pitch stopper brackets when removing engine and trans and it started leaking where the hose is crimped to the line. Fortunately I have one from a parts car.
Drain the trans. I had a drain pan under the tailshaft when I pulled the driveshaft out and at first nothing came out. Unfortunately to remove the engine and transmission I had to tip them at about a 45 degree angle which caused a few quarts of fluid to drain out. Some of this of course happened as I was moving it forwards and I didn't realize it wasn't all draining into the pan.
Also, what I'd recommend replacing while it's out:
spark plugs
valve cover gaskets - these always seem to leak
oil cooler gasket (orange o ring between cooler and block) - this leaks even more consistently
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coolant hard lines and hoses on the bottom of the engine for oil cooler and heater hose - in the midwest these tend to get rusty, not too expensive from the dealer
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99078AA110
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21328AA053
14165AA014
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thermostat and gasket
21200AA072
21236AA010
heater hoses - I've had one of these spring a leak on my 99 OB, the protective sleeve they put around them is a good idea but seems to make them dry rot underneath
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I also replaced the trans filter inside the oil pan. There was some metallic debris in the pan but the screen filter was pretty clean.
The radiator upper water necks are turning white too, not sure if that is a problem or not, but since it's probably the original radiator I'm replacing it and the radiator hoses.
EDIT:
I would also recommend getting new engine and trans mounts, especially if you are using the car off road. Both trans mounts were split but they have a stud with a rubber faced washer and a nut holding it from moving too far. All the engine mounts for these early EZ30s I've had off are either already split or cracked, some of them you could pull in half by hand. The engine mounts on my 2002 white Outback weren't too bad but I should replace the engine and trans mounts over the winter. At the same time I'll probably make a heavier duty replacement for the middle section of exhaust.