The brand new PS2 are probably not going to be easy. You'll be luck to find any installation guides for the version 5 board. It just hit the market a couple weeks ago, and while reports suggest that alternate solder points have been found and work, I've yet to see a diagram of where they are. But, I'd say that wont last long...probably just double checking the points on the new boards.
Also, I haven't heard whether or not the new PS2 v5 board will read the GameShark disc. I know when the last version 4 board (date code "1C") came out, it was unable to read the current GameShark at the time. InterAct has since put out a new version that is compatable.