Back in the day a lot of these cruisers had a a steel whip antenna for the old Motorola radio mounted at the rear location. If there was an AM radio it would be on the front fender. At time of disposal, most police agencies pulled the radio, light bar and the antenna which usually left a hole in the rear deck. In some case the holes would be filled and the cars repainted. Here in Oregon, the cruisers were EW1 and they would send the cars to the state prison for removal of the push bars, radio, and light bar and the cars would be repainted in EW1, poorly, and the cars would be sold at auction. I still have a U-Code'70 F1 cruiser I bought way back in my stash of cars. Oregon bought very basic cars in those days, no A/C, radios or much of anything else outside the police package. Most of the cruisers were turned at 70K or three years, which ever happened first. And in the mid '70's, you could not give away a 440 cruiser, most sold for about $750 or less. I paid $600 for mine because it had a light guard rail stripe on the passenger side. Still a good driver.
Dave