What year did the phase 2 start. And what is phase one and two?
'99 was the transition year, foresters went phase 2 that year, and the legos and outback went phase 2 in '00.
they redesigned the engine and added 4 bolt holes to the engine and trans bell housing. but the top end is pretty different but the electrical is the main thing, sensors and such.
however, you can swap the short blocks back and forth across the phase 1/2 line. they will bolt in and run fine. so a 98 block will mate with the '01 heads and intake and run in an 01 car with no issues. well one issue, the starter needs a bolt or a stud or something like that.
and vice versa, 01 block with 98 heads / intake run fine in a 98 car.