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    Engine 99 P71 Engine And Computer Installing In A 96 Gt, Start Help

    Hello all, I have a 1996 mustang gt that I will be installing a 99 p-71 motor and trans from old cop car. My question is related to ignition key security to 99 crown vic computer. I bought this car as a shell, hence no computer. 1- Do I need program key to computer for car to start? 2-...