Exo-caging a cherokee would be very difficult since it is a unibody and not a ladder frame design. To put a cage into a unibody you need to use torque boxes to connect the cage to the unibody. You could also make a parimeter frame to connect to the unibody (via torque boxes) and connect your exo-cage to that. That takes a lot of measuring though and tearing everything off your jeep.
