Pry the upper dash vent panel off, use a plastic tool if you have. Radio is held in with a couple screws deep in the dash, need long Phillips to remove. Heater controls themselves are a pita if you have manual controls. I've only removed them on cars that didn't need to go back together but I recall it being easier to just unhook the cables at the heater box than to try and mess with removing them from the control panel with no room to work.
Mirage videos:
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View my fuel log 2014 Mirage SE wussie cvt edition. 1.2 automatic: 37.7 mpg (US) ... 16.0 km/L ... 6.2 L/100 km ... 45.3 mpg (Imp)