I picked up an EJ22 from a formerly 2.5RS at upullrparts but not being the original engine couldn't determine much on the engine's actual year. I suspect it's a phase 2 engine based on the valve covers but it's been difficult finding surviving threads explaining the differences in the various versions of the EJ22. Anyone have some good sources or know themselves what the differences were or ways of identifying the heads and block? I still need to pick up an ECU, gasket kits, etc. to light rebuild the engine before installing it.