Radio Converter kit

I am restoring my 77z it has been in the shop since I am not mechanically inclined for the last 2 weeks. Spending about a grand so far.

It is skipping a little one of the valves the mechanic says isn't measuring any pressure.

My question is about a adapter kit to place a cd player in the car any idea whee I can get one. Also if you are in the Atlanta area and can recommend a good place to have it paintd I am open for suggestions.