Ken, I would have a hard time cutting a perfectly good vehicle in half also. Mine needed so much labor, parts, and expense that I deemed it just not worth rebuilding it all, plus I didn't really want another 'vehicle' to deal with since I already had two at the time. I went more into this somewhere near the beginning of this thread. I plan to do as much 'off-road' camping as possible, but most of it is probably going to be in pay campgrounds, so being able to unhook once camp is set up and still have a vehicle to drive around in is nice.
I gave everything that was removed to the guy who did the welding for me. He said he ran a couple of ads on Craig's List but got no takers, but I don't think he waited long enough. The next thing I heard was, he took it all to the junkyard and sold it for scrap. I looked on eBay and found those engines selling for as much as $3000.00, so somebody buys them.
Once I cut mine and replaced the rear axle, the only Ford part left was the rear half of the frame and the rear springs. So in your case, I think I would look for just another frame in a junkyard somewhere, and transfer the Ambulance Module (rear patient compartment) to it, if you have the resources to do so. Then you would be left with a working truck, which is called a 'cutaway chassis', that could be built into something else. Look at what Chris at UJoint built out of his, the Sherpa. This would have much more resale value than a bunch of parts too, I would think.
Another option would to be to sit the Module on a trailer frame, but it would have to be build up in the center to match the Module's frame, and probably more expensive in the long run.
Also, when I replaced my rear axle with the Rockwell I went big for safety sake. My axle is rated at 10,000 lbs, and has 5/8" studs on the hubs vs. the 9/16" studs on the Ford rear axle. The ford rims still fit, but we had to cut the alignment pins off of them because the Rockwell hub does not have the hole for them to fit in. I'm sure you would like to be able to use the same spare tires for either one, so these are just a couple of things to keep in mind.
I don't know who's rig this is, but I always thought these looked good together. Would look even better if they had matching paint jobs.