Honestly I dont think you will need to change too much. i have to do a bit of research to confirm the following, but i believe the engine harness should be the same with all of the wires being the same length. Not sure about the ECU however. You might also have to swap some of the sensors if they have different values or manufacturers so as to mach the setup you had on your previous motor. Again i have to do some research to back that statement up with facts because Im just going off of previous experience.
Born in the BG Raised all over. No wonder I'm confused.