How much lift right off the bat would the SAS give you? i know you can go extreme, but whats the minimum? I remember looking t doing this for my s10 blazer years ago and the min lift was 6". Like I have said before a good suspension lift would be a 2-3" or 4-5" Great ideas. I am a personal fan of bolt on because I do not have a welder. There should not be to much force on the bolts the bottom of the frame is doing most of the support weight, but there is a laterial force on the bolt when the springs compress and want to push apart that will need to be taken in to consideration.

Would this set up be using the springs from the waggy or springs from a toyota or nissan?

Would the steering linkage have to be custom or could the waggy steering bolt up to the montero pitman arm? I remember on on conversion my friends and I did and there was an issue of push steering set up and pull steering set up not wanting to interchange.

Would you change the brake set up? or run extended brake lines on both sides? I thought the waggy has one line to a block then stem out to the calipers like a rear axle but I could be wrong. It has been awhile since I looked at a waggy axle.

Lots of good stuff here and you alost need a thread just on waggy axles to discuss what mods are needed, gear options, locking hub etc. The cool thing would to be able to retain the dash indicator to tell you if your axle is locked or not.