* Mounting Points: While both engines are Chrysler products, the engine mounts are likely different. You'll need to either modify existing mounts or fabricate new ones to properly secure the 3.3L engine in the engine bay.
* Transmission Compatibility: Ensure the transmission from the 2.7L is compatible with the 3.3L. While they might share some transmission options, it's not guaranteed. You might need a different transmission, which introduces further complications.
* Wiring Harness: The wiring harnesses are different. You'll need to either adapt the existing harness (complex and potentially unreliable) or source a wiring harness from a vehicle with the 3.3L engine. This is a significant undertaking.
* Exhaust System: The exhaust system will need modification or replacement to fit the 3.3L engine.
* Computer (PCM/ECM): The engine control module (PCM or ECM) from the 2.7L will not work with the 3.3L. You'll need the PCM from a vehicle with the 3.3L, and potentially have it tuned to your specific vehicle.
* Accessory Drive Belts and Pulleys: The accessory drive system (alternator, power steering pump, etc.) may require adjustments or replacements due to differences in pulley locations and belt routing.
In short, while feasible, this engine swap is a major undertaking requiring significant mechanical knowledge, fabrication skills, and access to the correct parts. It's not a simple weekend project. If you're not experienced with automotive engine swaps, it's best to consult with a professional mechanic.
