Mine's a 79 too. I cut an original radio bezel for the single DIN size, and installed it with this Alpine model number UTE-62BT, that has USB and Bluetooth, both of which will work with playing the music from my phone, so no need for a CD. Having the original radio bezel as the surround keeps an original look. I like the style and appearance of this radio, and the Alpine brand goes back to when these cars were new, so there's a bit of nostalgia to it too.
This model has variable lighting, so you can change the lighting colors to suit your taste. The colors are customizeable, so you're not stuck with just basic colors. So you can make them whatever color you want. You can make the display lighting one color, and the surrounding lighting different, as I did with orange display and blue surround. Or make them the same if you want.
It's been a couple years and Alpine updates their models, so it looks like now, they have a new model that's basically the same as mine, but called the UTE-73BT.
019 by
grand73am, on Flickr