Hi lads,I have Sti Version 4 heads (under bucket shims) on my 2.5 but recently have had a cam seal leak fixed and have been told the cams are not sti cams. Realistically would it be worth it to get them changed?

Like what power difference would I see, or is it even letting the engines potential down?
Its a fully forged 2.5 and I want to get roughly 350-400hp out of it

Thanks in advance