i have 98 obs my question is i keep reading theirs a half year and not sure how i can figure out what i have it says ej22e on the motor which if i read correctly thats phase II so what heads should i be swapping to? i think its the lgt 2.5 heads and does anyone know where any are? what headgaskets will i need?

 

Im pretty sure ej222's are phase2, dual port 22e is phase1.
if you dont mind me asking why are you looking to swap for 2.5 heads?