I have a 2016 CX-9 and need to get my engine replaced (long story). I saw that engines from 2018-2021 seem to be a lot cheaper than 2016-17 and from doing some research, I’ve gotten mixed answers regarding whether using the 2018+ engine in my 2016 would cause any issues. I don’t see why it would, but does anyone have any experience or information on this for me please?

Thank you