I think my car holds the Guinness Book of World Records for having the most radios installed. Every time there's an update (it's a stereo conversion), I remove the radio and apply it. I do this so I can play the radio while driving the car, nit-pick on reception/performance, and feed back to the design engineer. I've had my own radio rebuilt, then converted to stereo, updated again and again, it was fitted with the very first prototype Aurora FMR Stereo PCB (which I now have in a display case), followed by several production PCB's along with Bluetooth modules and USB modules, it has also seen a few Custom Autosound USA stereos installed for testing, and THEN got an AM/FM set and converted THAT one -- and already have applied updates to it. Wow!
Here's the deal: original radio, remove the brackets from both sides of the console (which means you probably should remove the LEFT panel as well), then remove the knobs and mounting nuts from the front. Radio slides right out the right side, bada bing. Antenna connector, power/lamp connector, and two-or-four pin connector for speakers (depending on configuration).
Front speaker, remove the wiper/vent knobs, remove four screws and drop the center pod that holds the clock. Speaker is right there. REAR speaker is fun -- remove the seat cushion and seat backs. To remove the seat backs you have to also remove the armrests. With seat completely out, you can reach the rear speaker.
Oh yes -- in my case, when reinstalling the radio, I only use the right bracket so I don't have to keep removing the left console cover.