* Mounting: The engine mounts won't line up. You'll need custom motor mounts.
* Transmission: The stock transmission likely won't be strong enough to handle the torque of the Cummins. You'll probably need a stronger transmission, potentially a manual transmission designed for heavier-duty applications. This might require adapting the transmission to the Cummins engine.
* Driveshaft: The driveshaft will need to be modified or replaced to accommodate the new engine and transmission.
* Wiring Harness: The electrical systems are completely different. You'll need a new wiring harness or extensive rewiring.
* Fuel System: The Cummins requires a different fuel system than the original gasoline or smaller diesel engine. This includes the fuel tank, lines, and possibly a lift pump.
* Exhaust System: A custom exhaust system will be required.
* Cooling System: The cooling system might need upgrades to handle the heat generated by the Cummins. A larger radiator and potentially different fan setup may be needed.
* Steering: The increased weight of the Cummins might require steering upgrades for better control.
* Brakes: The heavier engine may necessitate upgrading the braking system for better stopping power.
In short, while technically feasible, this swap is a major project requiring significant mechanical skills, welding, fabrication expertise, and access to specialized parts. It's not a weekend project. It's often considered a project best suited for experienced mechanics or engine swap specialists. You'll also need to consider legal and emissions compliance in your area.