Erik,
Advance has everything to do the swap, and for some of the parts they are the only choice. Starting at the front you can find a used bell housing that will save a bunch of money over the one Advance makes. If you can find a 205 that was behind a Turbo 400 you will probably save $500 less the cost of the transfer case. The new input for the 205 and having the case bored was about $500. I found a used transmission and had it completely gone through with all new bearing and I have about $1600 in that. The adapters and brackets are about $600. My swap cost a bit more as I was using the newer flywheel and the hydraulic clutch. Everything involved I think I have about $3000 in it. I'd have to open up my Excel document on the truck to get the actual total, but I don't really like doing that, especially when my wifes home.