* Engine Mounts: The engine mounts are specific to the chassis. Even if the engine is the same, the mounting points on the Mark VIII and Continental may differ, requiring modification or custom fabrication of mounts.
* Wiring Harness: The wiring harnesses are different. You'll likely need to adapt or replace the harness to match the Continental's system. This is a significant undertaking.
* Computer/ECU: The engine control unit (ECU) is tuned for the specific application. A Mark VIII ECU won't be correctly calibrated for a Continental, potentially leading to poor performance, drivability issues, and even engine damage. You'll likely need the Continental's ECU or have one custom tuned.
* Exhaust System: Exhaust systems are vehicle-specific. You will likely need a Continental exhaust system.
* Transmission: While both cars may have had the same transmission type available (automatic is most likely), the specific transmission might vary depending on options. You'll need to ensure compatibility.
* Accessories: The placement of power steering pumps, alternator, and other accessories might differ slightly, requiring adjustments.
In short, while the engine *is* the same type, swapping it isn't a simple bolt-in process. It would require significant mechanical expertise, fabrication skills, and potentially custom tuning. It's far from a plug-and-play operation.
