unless somebody modified it, there are two studs coming out of the back of the plastic bezel that go through the heater controls and have nuts on the back. I have no idea why Chrysler did this because they are a ***** to get to. If you take the bezel out, you can screw the heater controls to the metal dash frame, ditch the studs (carefully), and the two exterior screws and the radio nuts will hold the bezel in place so you never have to do this again.
If you are careful, you can get the radio out without removing the bezel or damaging it. There is a bracket that goes from the radio to the bottom lip of the dash frame, remove it. unplug the antenna wire and the radio power wire. Pull the inner and outer knobs straight out and remove the nuts behind them (socket over the controls). The back of the radio should be slowly tilted down and pulled back into the dash until you can point the controls up and drop it out with the back of the radio pointed at the floor. On my AC cars you have to remove the AC vents and that makes clearance - you may have to do something regarding your floor heater vents to make enough room, but it has to be easier than an AC car.
