What size engines will fit into a 1991 Jeep Comanche?

The 1991 Jeep Comanche can accommodate a range of engines, primarily the 2.5L inline-four and the 4.0L inline-six engines. Additionally, some enthusiasts have successfully swapped in other engines, such as the 4.7L V8 from the Jeep Grand Cherokee. However, any engine swap may require modifications to the engine mounts, transmission, and drivetrain components to ensure proper fit and functionality.