yea, it's a bit more than just a few sensors!
it's an entirely different model ECU, some different pins on the plug, almost all the sensors are different, coilpacks are different, the entire engine loom would require changing, as well as the throttle body, pedal box, it's very much not a straight swap.
It's possible, but a lot of work for little gain when Niki can do such a great job of mapping ME3.8