How do you replace a 1990 Isuzu amigo 2.3 engine with 2.6 engine?

To replace a 1990 Isuzu Amigo's 2.3 engine with a 2.6 engine, first disconnect the battery and drain the fluids. Remove the existing 2.3 engine by detaching all necessary components, including the exhaust, wiring harness, and transmission connections. Install the 2.6 engine by carefully positioning it in the engine bay, reattaching the transmission, and connecting all necessary components, ensuring compatibility, especially with the wiring and engine mounts. Finally, refill fluids, reconnect the battery, and start the engine to check for proper operation.