In order to successfully remove/replace the radio, you
simply need the room to extract/install it. These units
are big and so "fishing" it through this and that probably
won't work very well.
When I've done it, I "loosen" the console, the shifter plate,
set the parking brake and shift the trans aft of drive.
Gently lift the shifter plate and rotate it, it will fit through
the console at an angle. Then I remove the console.
There's really no reason to remove the shift knob.
Next is the center and passenger side air conditioning duct,
be careful and watch close how it fits together.
With both the console and ducting out of the way it's almost easy.
Possibly you'll want the remove the ashtray mounting, but that's
not necessary, just adds even more room.
There you have it... Holler, if you need more detail...
Joe R