You and I have model P12s, the Special Delux. I suspect that more common were the P11s, the Delux model. Ours have more chrome trim and perhaps the bumper wings...or maybe they were simply an option.
I am doing mine as a Air Corp model. Correct or not, I will be using white stars with the red circle inside like used on WWII aircraft. I would love to have a flight line type of amber light on the top...if I could find the right one. I do have the front blackout marker lights but would like a siren/red light also. My idea is to have it be like a squadron commander might have to drive on the flight line.
I already have a portable WWII signal light that was used to signal aircraft to wave-off or if it is safe to land. It will be a prop for the car at shows, etc. A friend is giving me a WWII aircraft clock for the car and I'm watching for a suitable altimeter. As you know, with the field elevation, you can tell the pressure setting to relay.
The white wings are a good idea, if you don't mind, I'll do that with my car, too.
Former Vietnam POW
USAF Pilot, Captain