Unless you plan to remove the heater controls there isn't enough room top to bottom for a double din. The opening is just enough for a 1.5 din. You'll have to be creative to make it look clean & well fitted.
Echo the double DIN. The HVAC has all those vac hoses hangin out of it. I made a bracket out of aluminum to replace the stamped steel one, to fit a stacked DIN radio and 1/2 DIN equalizer/amp. About 30 years ago. Paint it black to hide any mistakes when cutting out the stock plastic radio plate.