Driveshaft on my 66 valiant fell off. Now what?

Not only did it fall off, it was stolen.

Last night i was cruising, and heard a terrible clank clank clank. The clank stopped and i rolled to a good place to leave the car for the night.

I got up this morning to check it out, found the driveshaft missing, walked along the road i was on and its not there. Someone picked it up. So now i am screwed.

I don't even know where to start. Its a A904 transmission. So i figure i'm just going to order a yoke and get someone to make me a new one?

Am i on the right track? Anyone got one of these laying around? :cross fingers: