Short Shaft Slip Yoke 727's in Old Airport Tugs?

I was talking with a friend tonight and he was telling me a story I wonder about. He claims that years ago he got some short 727's that had slip yokes, not bolt on yokes used in the tugs at airports that tow the planes around.

I've personally never heard or seen one. What say you all?

Tom
These DeLorean (Yes, same DeLorean as the car) T40 tugs might have a slip yoke shorty 727. Our shop tug was one of these when I was in the Air Force. It had a /6, shorty 727, 7.17 Dana 60 and reduction gear box. It's been almost 30 years since I've seen one, but since the tug was pretty small, this might have been the perfect application for a slip yoke shorty since there was very little room to work with since the reduction gear box was pretty big.

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