* Engine Differences: The 2007 model uses a modular 4.6L V8 (likely a variation optimized for police use), while the 1998 model utilizes a different generation 4.6L V8. These engines have different mounting points, accessory placements, and potentially different electronic control systems.
* Transmission Differences: The transmissions are also different generations and likely have incompatible mounting points and electronic controls.
* Wiring Harness and Computer: The wiring harnesses and engine control modules (ECMs) are completely different and incompatible. Adapting them would be a major undertaking.
* Other Components: Other related components like exhaust systems, cooling systems, and mounts are not interchangeable.
In short, while both are Crown Victoria Police Interceptors, the engineering changes between the model years are substantial enough to make a direct swap extremely difficult and likely not cost-effective. It would require extensive fabrication, custom wiring, and potentially significant modifications to the 1998 chassis.
