Clay, a "package car" is a factory-optioned police package vehicle. A police package car could be anything from a Crown Vic, Charger, B4C Camaro, SSP Mustang, etc.
If your car is a SSP, then it would have a 6-digit DSO number listed on the door's VIN sticker. All SSP's have a 6-digit DSO, but not all 6-digit DSO cars are SSP's. Ford built regular cars and were sold with 6-digit DSO's. Your car's Buck Tags on the radiator support may contain useful information. The restoration info linked on our
main page should help you identify your car.
An AOD is an automatic transmission with overdrive.
Post up some pictures when you can...