Unknown Driveshaft

[TDF]

A few years ago, while delivering an M37 we'd sold I was given a half a dozen driveshafts that were supposed to fit jeeps. In the pile I have two M38 rears, 3 M38 fronts and one I'm not sure about. It's identical, in all ways, to an M38 front but is about 3 inches shorter. Measures about 21" collapsed, vs my M38's which is about 24 inches collapsed. Could anyone hazard a guess as to what that would fit?

Thanks,
TDF