1. Transmission Compatibility: The 1999 Plymouth engine may have different transmission requirements than the 1988 Chrysler. You may need to modify the transmission or the engine mounts to make them compatible.
2. Electrical and Computer Systems: The 1999 Plymouth engine may use a different electronic control unit (ECU) and wiring system than the 1988 Chrysler. This could require significant electrical modifications to make the engine work properly in the 1988 vehicle.
3. Fuel System: The fuel system requirements for the 1999 Plymouth engine may be different from the 1988 Chrysler. This could involve modifying the fuel lines, fuel pump, and fuel injector system to match the requirements of the 1999 engine.
4. Engine Mounts and Brackets: The engine mounts and brackets in the 1988 Chrysler may not be suitable for the 1999 Plymouth engine. Custom mounts and brackets may need to be fabricated or modified to securely install the engine in the vehicle.
5. Emission Controls: The 1999 Plymouth engine may have different emission control systems and sensors than the 1988 Chrysler. You may need to modify or adapt these systems to meet the emission regulations for your area.
6. Custom Fabrication and Modifications: Depending on the specific models and configurations, additional custom fabrication and modifications may be required to fit the 1999 Plymouth engine into the 1988 Chrysler chassis.
Given these challenges and the potential costs involved, it may be advisable to consult with experienced mechanics or engine swap specialists to determine the feasibility and cost-effectiveness of performing such a swap. It might be more practical to consider a different engine option that is more suitable for the 1988 Chrysler vehicle.
