You can find the factory service manual DVD's on eBay or sometimes on Torrent sites. You are looking for the SAAB WIS, for Workshop Information System.
So, in your first post you asked about swapping 2000 to 2003. 2004 there were some changes to the crankcase vent system and a few other small things that are not a direct swap. They are easy changes to accommodate, but they are slightly different.