Thanks Mothertrucker, I have a GMC radio that has a rectangular dial housing with the CD markings on it. I know that the GM radios started using the CD (CONRAD?) markings in 1956, so this radio is at least 1956. I remembered looking at a 54/55 first series chevy truck and it had a rectangular hole in the dash. Will the radio I have fit in the 54/55 Chevy truck dash or was this a one of a kind radio too? At one time I thought that a rectangular bezel was made to convert the 53/54 car radio so that it would fit the 54/55 trucks. Am I having a senior moment or do you know of a retro kit? .............g :confused: