NOT KNOWN DETAILS ABOUT MAZDA CX 5 RADIO UPGRADE

If there was a bigger OEM Mazda choice then I might go for that, but as far as I'm sure, There's not. So I'm trying to find guidance, from people who have transformed their headunits or who may have a far better knowledge than I do (not quite challenging) of what the implications will be. Some tools might be needed for example screw-driver, some t