I recently took a friend Casey out wheelin with his 4Runner that just had the 4x4 conversion done to it. The whole process took only a weekend to complete. Here's a link to a post about the procedures; http://www.yotatech.com/showthread.php?t=29411

There are a lot of people doing SAS conversions to their Taco's and Runners, so getting complete front drivetrains are quite cheap. I recently saw a post where someone is doing a SAS job and I'm sure you could get his stuff; http://home.comcast.net/~4x4freak/wsb/html/view.cgi-home.html-.html