Details on the donor truck? It may be fairly simple to hook it up.
The front axle from the donor is gonna be real wide compared to your stock rear axle assembly.
AA says there adapter only works with WC T5s, not sure why, it works with the mini truck transfer case which is a really good transfer case.
Here's another idea, remember we are talking about a stovebolt with a whopping 120 hp. How about a samurai transfer case. It is a divorced transfer case and you could stick it behind the T5. That may be a driver's side drop.