Driveshaft length charts are nuts

So I came up with 51" and I found one that seems to fit.

It came out of a 72 valiant with a 904 /7.25
Yet it seems to fit a 74 duster, 904/ 8.25 perfect

The only concern is it the skinny one so I have to do some research to determine if the diameter is enough to handle the 360.

If it will, then I saved money and clean it up and i will replace the u joints and use it.

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