273 engine swap into a Jeep CJ5

Greetings everyone... I am a brand new member and have a question about an engine swap of a 273 into a 1980 Jeep CJ5... has anyone ever done this? If so will the current transmission bolt up to the engine or will I need a different bellhousing? Any information would be great! Currently the jeep has the inline 4-cylinder. I am assuming I would need new engine mounts but just curious if this is worth the trouble... Thanks again!