Driveshaft Mistery???

Thanks, what you people are saying makes sense. I don't think the rear is original and I guess if measure it real close and tell it that way someone will know if they need it or not. I just don't want to mislead anyone. But if I give the diameter, length and yoke size that should be enough. It does have that step-down in diameter like my 904 driveshaft so I guess it's Mopar??

treblig