Nice!! 1965 barracuda part out

what kind of driveshaft? did it wind up being an 8 3/4 rear. If it was a 904 auto with 8 3/4 rear I would be interested in the driveshaft. assuming its ball and trunion (I'm sure that's spelled wrong).
It's a 904 with 8 3/4 driveshaft is one my grandfather made himself. Cut and welded. He was really good at balancing them himself too. He was a smart old man and a MOPAR fanatic. Knew everything about them.