The P-51's durability and firepower ... After the original Allison engines were replaced with the Rolls-Royce Merlin engine the Mustang became enchanted in its ability to serve as a multi-role ...

3 Key Points: The P-51 Mustang, often hailed as the best operational ... Initially equipped with the Allison V-1710 engine, its performance was limited at altitude, leading to the crucial switch ...