You can find it in the OEM service manuals but as I recall, you just need to remove the top pad, don't you?
If so, the screws are under the front lip of the dash pad, a couple are inside the glove box area etc. once you have all the screws out, just slide the pad forward and lift it off.
If it's a one-piece dash, you can get them from underneath with 1/4" extensions and swivels.
You can also just say the hell with it and just mount pezio's on the a-pillars or in the door panels to take their place.