* Engine Management System: The 1994 model uses a significantly older and simpler engine control system than the 2000 model. The wiring harness, sensors, and computer are not interchangeable.
* Accessories: The placement and type of accessories (alternator, power steering pump, etc.) may differ, requiring modification of brackets or hoses.
* Mounting Points: While the overall engine dimensions might be similar, subtle changes in mounting points could prevent a direct fit.
* Exhaust System: The exhaust manifolds and catalytic converters are likely different and incompatible.
In short, while the displacement is the same, a significant amount of modification and adaptation would be required to make the 2000 engine work in the 1994 chassis. It's a much more involved project than simply swapping engines. You would likely need to modify or replace many components, including the wiring harness, computer, and possibly even some mounting points on the chassis.