Early 4.0L Jeeps used a Peugeot BA/10 five speed. It's okay for sporting around town, but won't take the abuse of 4 wheeling or heavy towing. I wouldn't tow much of anything with it!
At least the 79-83 AMC/Jeep six bell housing was drilled for all transmissions mentioned in the previous post and three speeds. Easy to tell once the trans is removed -- there will be 3-4 extra bolt holes. Not all years have all holes tapped, but that's easy to fix. So you can use a three speed manual bell. I don't know if 76-78 bells havethe extra bolt holes, or if there is enough "meat" to drill the housing.
