Here is a picture of my dash.... it does have the exstension so I could put the HVAC controls and also to hide the A/C unit

And here is my over head. Plenty of room but all I have are buttons for the doors and the suicide locks. Also the face plate for my stereo. Plenty of room for more if you wish.
Not sure if you have this but it is easy to make. I used 2 2x4 and paint sticks on the ends ...... glassed it smothed it and painted....this really was to hide the electric motor from my wipers and decided to put the other things on it