Prior to 2006 "ballistic proof", aka, 'bullet proof' door panels were available from "after-market" vendors. Beginning with model year 2006, Ford offered them as a "factory option" in the P71 Package on their Crown Victoria. At $2400.00 for the two front doors it was a rather expensive option, so in many cases when the car was retired and sent to auction the Kevlar panels would be removed for use on the new police cruiser.

More Info: www.pontiacperformance.net