The transfer case yoke is the easy part. Our Jeepster was equipped with a Dana 20 transfer case. All that had to be done was install a Dana 20 front output yoke that was intended for a 1310 U-joint. Easy, he said. If you are working with an older CJ-5 or Willys Jeep with a Dana 18 transfer case, then the job and the parts are the same. Since the Dana 18 and Dana 20 are so similar, a 1310 Dana 20 front yoke bolts in place. No puller was needed to remove the old yoke. You will need to drain the transfer case first to avoid a mess.