Woah, I think I saw the post on this at dirtyimpreza (or maybe it was another forum)... nice work!
Would this require a custom driveshaft?
What rear diff would you use? R200?
Does the shifter line up right?
Also, pardon my n00bness, you mentioned 4wd tranny. Would that even work with the subie? or would you use it in a 2wd configuration?