You're going to have some control systems incompatible, and same with tranny, different controller and linkages. EGR changed quite a but between 95-99, big difference too in torque converter, BUT for the most part, all 2V Modular V-8 are interchangeable. Best place to go for info on this swap is Crownvic.net.
There were spec changes to the engines during those years so no guarantee that you won't have some electronics compatibility problems.
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