I have an 86 300E with the stock Becker Grand Prix radio. The radio does not get good reception where I live, and the sound ping-pongs from L to R speaker all the time.

I want to upgrade the radio, but I want to keep the "older" and original look of the Grand Prix. (Besides, I find the button scheme on the GP better than all the new radios I've seen lately). Are there any such kits, where the face of the radio is the same original Grand Prix, but where the insides are closer to state-of-the-electronics?