Drive shaft wanted !

I have one that came with a 72 340 Duster that I just picked up. The car had an 8 3/4. Would you be able to get the U-joint center-center dimension? The one that I have is 45" with the small U-joint and a 727 trans yoke. May not from this car but it was in the trunk when I got it and looks to be the right one.

Ken
Edison, NJ
[email protected]