Rear drive shaft length

Hey guys,

I'm cleaning out some stuff out from my rebuild. During my quest for parts for my 3B, I believe that I bought a CJ5 rear drive shaft. They said it was from a 3B, but it was too long. It is 18-5/8 inches when fully compressed. That is from center of the Ujoint to center of other Ujoint. Can anyone verify if that is the correct measurement for the rear drive shaft for a CJ5 or if it isn't, do you know what it might be from? Thanks for your help.

Once I find out for sure what its from, I'll be posting it for sale.

Thanks again,

Doug