The seals they are talking about are the crank oil seal (front) and the rear main oil seal. The large seal for the crank in the back of the block.
The power steering lines (P/S lines)
i'll be starting my swap later this week. I just ordered my clutch and fuel pump today.. everything else is a go.. minus a few misc parts..
As for the clutch.. If your using the 2.5rs tranny, then get a clutch for a 2.5rs. If your using a wrx tranny, then get a wrx clutch.. They operate differently and won't interchange.