1968 Dodge Dart Driveshaft

[Mojoe9955]

This is from the 68 parts book. Even though it’s commonly agreed upon that the 833 and 904 are the same length.. the book shows two different lengths for the drive shaft with a 8 3/4. Maybe the .75 difference isnt enough to be detrimental ?

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.75 too long is probably not good, but .75 short might not matter much