Guys I've got an antique radio-cum-turntable at home and it is busted. So I am thinking of keeping the shell, and changing the guts of it to a car audio setup. The setup I thought of is very simple. Just a HU connected to a pair of 6x9 speakers.

However my concerns are

1. How to power the HU? go through a AC/DC converter?
2. Will my HU setting (station/presets) be erased every time i switch off the power? (since there's no battery)
3. How can I attach an Antennae to the HU?
4. Can the HU play CD if its mounted at 45 degree angle? (this is the angle of the faceplate that I intend to use)

Feedbacks would be very much appreciated.