U- joint question

Stock mopar shaft? Does it have stop tabs in the yoke?

Measure the inside width of the yoke ears.
http://www.thrashdriveshaft.com/Pinion Yoke-No Tabs.JPG

Stock mopar should be 2 1/8 for a 7260 or 2 5/8 for a 7290.

Look here for measurements/specs for most all popular u joints
http://www.dennysdriveshaft.com/c130_universal_joints.html