Originally Posted by OneMoreTime
I think that measuring the jeep engine bay and comparing the length to the Rambler bay would tell the tale on how close the 4.0 would come to fitting.
Jeep 4.0L is the same length as the 232 that was used in the '65 and could even use factory mounts. It would require a CJ5 or '65 Rambler 232 short water pump, as the 232 used that year in the American. Length isn't the problem on the '63, the front suspension is 'large' and the 2 inner fenders take up a lot of engine compartment space, which really can't be mod'd