I recently removed the radio on my truck and it does not appear to be original. I don't really have the extra money to buy a repro for $600 and I don't want to spend my time trying to find a used one to be fixed up. What I was wondering was if there was some kind of plugs or something that can be used to fit in the holes in the dash. On oldgmctrucks.com, I saw some of the original factory photos and there was one with the two holes on the side and the large rectangle in the middle plugged with something. I think it was metal and it was painted the same as the dash. Is there anybody who knows about these? Should I just try to make my own?

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