Thank you so much for the advice and photos. If I understand you correctly, The heater controls will come out attached to the bezel connected to those studs. OH, YOU WISH THAT WERE TRUE!!! YOU HAVE TO TAKE THE NUTS OFF WITH EVERYTHING IN THE DASH BECAUSE THE METAL DASH FRAME IS BETWEEN THE HEATER CONTROLS AND THE BEZEL YOU LEAVE THE HEATER CONTROLS IN PLACE AND THEN HAVE TO PUT THE NUTS BACK IN AT THE END - UNLESS YOU USE THE HOLES IN THE DASH FRAME TO SCREW THE HEATER CONTROLS IN PLACE INDEPENDENTLY OF THE BEZEL, LIKE I EXPLAINED. iF YOU DO IT THAT WAY, YOU CAN ACTUALLY SEE YOUR FINGERS WITH THE NUT THROUGH THE HEATER CONTROL HOLE IN THE DASH WITH NO BEZEL IN THE WAY. Is there typically enough play in the heater controls to access the attaching nuts?
Also, (if I understand) there are nuts under the radio knobs attached to the shaft holding the radio in. Are these attached to the metal dash or the plastic bezel? LIKE THE SITUATION WITH THE HEATER CONTROL STUDS, THE METAL DASH FRAME AND THE BEZEL ARE SANDWICHED BETWEEN THE NUTS AND THE FACE OF THE RADIO, FORTUNATELY THESE NUTS ARE ON THE OUTSIDE RATHER THAN THE INSIDE OF THE DASH SO THEY ARE NO PROBLEM.
Sorry for all the noob questions but Ive never had this style of radio before. FIRST TIME I TOOK ONE APART, I PRIED THE BEZEL OFF BECAUSE i SAW NO MORE THINGS TO UNSCREW AND BROKE THE BEZEL ALL TO HECK. I WISH SOMEONE HAD CLUED ME IN (or that I had been smart enough to ask, I was 18) - SEE PICTURE OF DASH FRAME BELOW. The radio in my Caprice Classic was similarly bolted to the dash 7 ways to Sunday, but it didnt have the whole bolted-knob shafts thing!