Can the 84 6.2 engine harness be put in place of the engine harness of an 82 350

Okay, please don't murder me for asking about this, but I have an 01 Dakota approaching 200k on its 4.7l V8. I am looking at diesel swaps as I intend to do some major off roading and the torque and fuel efficiency would make the diesel a great alternative to a rebuild. My intention is a 6.2...