I recently purchased a 1955 series 1, chevy half ton and it has a large hole in the top of the dash. It is located about center between the gauges. It appears to be from the factory. I cannot find any pictures of other trucks with this same hole or one with an accessory installed there.
I'm new to old trucks and new to this board. I don't know yet how to post a picture here but I can e-mail a couple of pictures if it would help to see it.
Thanks, Steve