* Engine Management System: The 2000 model will have a more advanced engine control module (ECM) and likely utilize OBD-II diagnostics, which is a significant improvement over the 1995 system. This means better emissions control, potentially slightly improved fuel economy, and easier diagnostics.
* Emissions Standards: The 2000 Dakota likely meets stricter emissions standards than the 1995 model.
* Transmission: While both likely have the same automatic transmission option (a 4-speed is common for that engine), there might be minor internal differences leading to potentially improved reliability or shifting characteristics. Manual transmission availability might also differ between years.
* Body and Interior: There will be styling differences, both inside and out. The 2000 model will have a slightly updated design. Interior materials and features might also have some differences.
* Wiring Harness: Wiring harnesses are significantly different. Direct swapping components is not recommended.
Can you exchange parts between the two?
Swapping some engine *parts* might be possible, but it's not straightforward. Many components, including the ECM, sensors, and even some internal engine parts, are likely not interchangeable without significant modification. You risk causing problems if you mix parts between these years without careful consideration.
Can you swap the entire engine?
Swapping the entire 3.9L V6 engine *might* be feasible, but it's a significant undertaking requiring mechanical expertise. You'll need to consider:
* Engine Mounts: While the engine block might be similar, the engine mounts and their placement on the chassis could differ.
* Wiring Harness: The wiring harness will need to be swapped from the donor 2000 Dakota, requiring significant work to route and connect all the wires.
* ECM/PCM: The engine computer (ECM or PCM) is crucial and almost certainly *must* come from the 2000 engine. You cannot simply use the 1995's computer.
* Exhaust System: The exhaust system might not be directly compatible.
* Transmission: The transmission should be considered for compatibility as well.
In summary, while some individual parts might be similar enough to work, a complete engine swap is a substantial project. It's more practical to repair the existing engine or source a replacement engine of the same year to avoid compatibility issues. A qualified mechanic should be consulted for any engine work.
