0.50mm over pistons (with pins, of course) - 6 x 12006AB860 (per Jackie @ Annapolis Subaru, there are different part numbers for '01-02 and '03-04 engines; I don't know why)
Ring set - 12033AB150
Main bearings - 12209AA400
Rod bearings - 12108AA850
Engine gasket & seal kit - 10105AA530
Valve cover seals - 13270AA104 and 13272AA104
Spark plug seals (for the valve covers) - 13293AA051
For some reason those last two aren't included in the gasket & seal kit.
Maybe because they don't have to
The gasket & seal kit doesn't include a parts list, so I just shot a PM to Jackie to see if she's got one she can send me. It has the head gaskets, intake manifold gaskets, exhaust manifold gaskets, oil pump and regulator gaskets, the magnet that sits on the bottom of the oil pan (
- they include that but not the valve cover seals?), front and rear main seals, throttle body gasket, coolant cross-over pipe gaskets, valve guides, and a whole bunch of o-rings.