<rant>
It's fairly simple to "port" I guess, as far as I know the process consists of: downloading the MiMax ROM and copying over the hardware files from our Kenzo MIUI-7 ROM, of course before any of this your either going to need system dumps or a way to extract the firmwares, and even then you'll need to put together an update-script to properly flash it all, and then you can start testing stuff out to see what works/dosnt and then you rinse and repeat until everything works, I've done this before for another device and although it did boot, there were countless issues and the entire process is archaic and pointless tbh, building from source (but we can't since MIUI is closed source so id say just wait for MIUI8 lol) would be easier in some sense since having the source upfront helps you have an idea of wtf is actually going on compared to the guess work that is copying & pasting libs and stuff from /system/etc, my point is, just wait till June 28th or whenever were supposed to have MIUI-8 since hacking together an M based MIUI-7 for our device based on another devices firmware with "similar" hardware would just be painful and I'd feel sorry for you if you had to do such, then again I could be awfully wrong and the entire thing may work (it is quite possible) relatively easily considering the familiarity of the hardware, I just wouldn't expect it to be bugless, but someone please do prove me wrong, I'd be happy.
</rant>
