Darkshadow didn't do that swap. But he'* worked on it enough that he probably knows most of it.
Randman1 did the swap. That was the official christening of the Villa. To make this happen, yes a couple of motivated individuals "COULD" do it in one weekend.
Here'* what you need, everything ready and waiting to get dropped in and rewired. You would litterally have to be ready ahead of time.
Cruise control can be rewired ahead of time. Vats would need to be added or bypassed in the PCM. Exhaust on standby...slightly different. Wiring connector made ahead of time. Fuel lines ready for swapping. New fuel sender in tank. New AC evap, condensor and lines.
That doesn't account for the engine, trans and axles.
You could do much of it ahead of time and be in prep mode. For example. You change the fuel sender and drive by mileage for a week or so. You add the cruise control wiring ahead of time. Prep your engine harness adapter/connector and have a gutted parts car on hand for anything you might need.
Search Frankenbonne by myself or Randman1 Then if you want more pictures look in my photobuckets.