* Engine Mounts: The SRT8 engine and its supporting components (transmission, etc.) are different and won't bolt directly into the SXT's engine bay. Custom engine mounts will be necessary.
* Transmission: The SRT8 uses a different, heavier-duty transmission. This will require swapping the transmission, driveshaft, and possibly the rear differential.
* Wiring Harness: The SRT8's engine harness is different. You'll need to either adapt the existing SXT harness or use the SRT8 harness, requiring extensive rewiring and possibly a new ECU (Engine Control Unit).
* Cooling System: The SRT8's engine produces significantly more heat. You might need upgrades to the radiator, water pump, and other cooling components to prevent overheating.
* Exhaust System: The SRT8's exhaust system is larger and more powerful. You'll need a new exhaust system.
* Brakes: The SRT8 has more powerful brakes to handle the increased performance. Upgrading the brakes in the SXT is highly recommended for safety.
* Suspension: The increased power and weight might require suspension upgrades to handle the extra performance.
In short: While technically feasible, this swap is a massive project requiring significant mechanical skills, specialized tools, and a substantial financial investment. It's far beyond a simple engine swap and is more appropriate for experienced mechanics or dedicated enthusiasts with access to a well-equipped shop. The cost of parts, labor, and potential unforeseen issues could easily exceed the value of the resulting car.
