CI sells radio bezels for aftermarket radios, too. Not diecast as the originals but with a narrower spacing between the knobs and with two different sized center holes. They are available black, walnut and burlwood but the burlwood´s not correct.
Just flip through their (if possible printed) catalog (their new online site is a PITA) and look for parts #RB100S (black, small opening), #RB100L (black, large opening), #RB200S (burlwood, small opening), #RB200L (burlwood, large opening), #RW200S (walnut, small opening) and #RW200L (walnut, large opening). Price is 29.95 ea.
Their comment:
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Now you can get an original appearance while installing the aftermarket radio of your choice. This all new face plate can be used with virtually any late model, name brand radio which include horizontal adjusting knob arms. Simply purchase the radio of your choice and install it using the new face plate. The original radio face plates are not compatible with today's new AM/FM Cassette radios. Our new face plates will eliminate the need to cut your original face plate and will not ruin the looks of your dash. Choose from the walnut woodgrain, burlwood woodgrain or black.