I ahve 02 wrx with original pan on it and I have problems on the track. oil is being collected in right cylinder head and then goes out from breather tubes (I'm lucky I vented all to atmosphere and did not let this oil go in intake tract again), even when I ahve 4.5 liter in the pan (I do say nothing about 5 liter of oil in the pan).
so I see 2.5 oil pan with 2.5 oil pickup can help in that. does any 2.5 oil pan suit my needs? even 2.5 NA engine pan/pickup?
I have stock headers also