I think you may be confused as to the phase of the head, and the single or dual port exhaust manifold setup. Phase 2 started on the impreza's in 99, along with foresters and base model legacy's.
i prefer the single port Erik, shoot me an offer i guess i could part out my motor and sell the short block
hey i just wanted to come back to this, i still barley understand this whole phase thing because well, all the info i find seems to contradict each other. in MY97 for the legacy, the heads got rid of the HVLAs, got larger valves, dropped the egr set up ( i think), and were single ports.... and from other resorces i hear that this is the change to phase 2 heads. now if somebody has some uberchart that shows how all these changes actually correspond to phase number, i would LOVE to look at it.
if the heads look like every other 2.2 then they are phaze 1, phaze 2 looks just like SOHC 2.5 heads, MY99+