Compatible transmission?

[subiedo]

Here's a description of a used tranny I'm giving thought to as a replacement to my tired one. Am I looking at something here that would be fairly easy to drop in along with rear diff. gear swap of course. Whatcha think, worth doing? Here's the donor car description: 2001 Subaru Impreza Outback Sport. It is AWD, has only 29K on it. Also includes torque converter and available rear diff.