72 Duster Driveshaft

I'm looking for a driveshaft for a 72 Duster 318/904/8.75 combo the dimensions are 2.75 diameter x 48.96 length
A 71 Valiant might work too
2.75 diameter x 49.25
length
The length is from center to center of yokes.
Closer to zip 08244 please
Thanks for your consideration