Doug, I was told the original owner worked in the early aero-space business, up in Palmdale / Lancaster California. There were any number of "wierd" aero type fasteners in the holes. He had a radio, speakers & other gauges fastened there according to the man I bought it from. The best was the 12" & 8" hole cut in the floor pan behind the driver's seat; it supposedly had a shallow sheet metal box hung there, where he hid his bottle of "medicine". I luckily was able to find another Victoria pan, so that one went to the swap meet, where it quickly sold, hole and all.