Here's why it's so difficult:
* Engine Bay Size and Shape: 1993 cars generally had smaller engine bays designed for smaller, often inline or V6 engines. The 4.6L V8 is a physically large engine, and even more so with the added bulk of a supercharger. The engine's width, length, and height would likely be incompatible with the existing structure.
* Mounting Points: The 4.6L V8 has its own specific mounting points. A 1993 car's frame wouldn't likely have compatible points, requiring extensive fabrication and custom work.
* Exhaust System: Routing the exhaust system around the chassis and through the firewall of a 1993 car would be a major undertaking, and might require significant cutting and welding.
* Transmission and Drivetrain: The transmission and associated drivetrain components (driveshaft, axles) from the Cougar XR-7 may also not be compatible with the 1993 car's existing setup.
* Wiring Harness and Computer: The Cougar's engine control module (ECM) and wiring harness are specific to that engine. Integrating it with a 1993 car's electrical system would be a massive electrical engineering challenge.
In short, while theoretically *possible* with extensive fabrication and custom engineering, it's a project of immense complexity and cost, far beyond a simple swap. It would likely be easier and less expensive to find a car that already has a larger V8 engine.
