Do I need the dust boot....

BigBlockMopar said

1/2" play.
So why would that be a problem? Sound good enough to me.
As long as the yoke doesn't bottom out in the trans it should be OK.

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OK, thanks all....I guess I was just being over-carefull. After inspecting the old 7.25 driveshaft yoke, the boot seemed to running in the same location as the new yoke.