Driveshaft on my 66 valiant fell off. Now what?

Well, I haven't been able to measure it. Somehow everyone needs me to work for them when i have no vehicle. But i've been on the phone. I'm not having luck with the junkyards here in town. And there is only one drive shaft shop left here in town.

My dad advised me that the shop would have to "make something work." So i'm likely going to need one from somewhere else. If it comes down to it, I'm willing to buy one and pay for it to be resized.

I'll give an update tomorrow. Thanks for all the help guys.