Bunch of stuff needs swapping
https://www.ft86club.com/forums/show...0&postcount=22
Other drama is while the ecu and current tune in ecu will get the 2017 engine running, the tuning required to run the 2017 engine is a lityle different to the earlier motors, about ,4 degrees less timing. And you cannot simply flash the 2017 rom as its not compatable and car wont start.
You will need to tweak the tune to run well with the 2017 motor