I have been disassembling the explorer in the back yard one bolt at a time. Trying to take something apart in such a way as to salvage the salable items is a BI..... They are designed to snap together on the assembly line but not to snap apart under any circumstances.
The more I get into it the more convinced I become that there is no possible way to do this swap without using the Explorer frame. I am now thinking about some wierd ways to pick it up and support it. I have a large pile of square and retangular steel tubing in the back yard that I can use to support it I just need to figure out a way to jack up the B2 body. I looked up the weight and it is 3700 lbs.+ -. Figure that at least half of that weight is frame and running gear puts the body at less than 2k which is not that heavy.
Welding up a support should not be too difficult, however jacking it up enough to roll a chassis and engine out and then another one in is another story. I can get a well used floor mount really cheap but the only place I have to put it is my side yard which is slightly less than 10 feet and I need slightly over 12.
Oh Well
I'm not sure how you are set up, but, if you pull the engine and tranny\T-case out of both, then take off the body, it will reduce the required height a lot.
The shell will be well under 2k (I've never weighed one, but 2 of us could move the 79 shell around on the hoist arms without catastrophe)
Make some tall 3 legged stands to hit the pinch welds that will hold it up high enough (hopefully) then remove all the body mount bolts, grounds and connectors, remove the master cyl and undo the steering column and shift linkage. Don't forget the filler neck for the gas tank.
once everything is undone, lift on the frame\diffs to the desired height, put your stands under the pinch welds and let the chassis down under it.
That's how I used to do it before I got my hoist.
Good luck!
Cheers