That's good, you can swap those bodies. There are two wiring harness connectors under the body near the driver's seat, and various connectors for the engine/trans, engine bay, and short ground wires. The shifter has a cable that you have to disconnect also, remember that.
When you remove all of the body mount bolts etc, and separate the wire connectors, then it shouldn't take long to lift the body off. Watch out for other items we didn't mention, go slow when lifting it up, so you see those things.