54GMC:
I don't know about the '54 GMC dash, that's the year that GMC went to the dash that's different from the Chevy, isn't it?
A '53 Chevy car radio might fit too; I have one in my '54 Chevy truck, however, someone cut out the bottom of the dash under the radio opening to accomodate a '52 or earlier GM radio; fortunately, the carnage is not obvious with the "radio-delete" plate in place.
