Swapping the engine is possible, but it's a major undertaking requiring significant modification. You'll need to:
* Address the Engine Management System (EMS): This is the biggest hurdle. The 2001's computer (PCM) won't work with the 1992's wiring. You'll likely need to either use the 1992's computer and harness (meaning you're losing the benefits of the newer engine's computer), find a custom wiring harness solution, or utilize a standalone engine management system (which is expensive and complex).
* Deal with Different Sensors and Actuators: The sensors and actuators (like oxygen sensors, throttle position sensors, etc.) may have different connectors or even be entirely different. You'll need to sort out compatibility issues.
* Adapt the Mounting and Accessories: While the engine itself *might* physically fit, minor adjustments may be needed to fit it into the older engine bay. Accessories like the alternator, power steering pump, and A/C compressor may require modification or replacement to work with the 1992 system.
* Exhaust and Transmission: You'll need to assess the compatibility of the exhaust system and transmission. Some modifications might be necessary.
In short, while it's *theoretically* possible, it's a very difficult and time-consuming project requiring significant mechanical and electrical knowledge. It's far from a simple plug-and-play swap. Consider the cost and complexity before attempting this. A professional mechanic experienced in Jeep swaps would be very helpful.
