Yep, and if you're replacing the U-joints they recommend new U-bolts where used, like the pinion yoke on the rear axle.
It's best to buy U-joints by size and description, not by application.
Now if you go back to those same parts stores with some measurements and how the caps are retained, they'll have the parts you need on the shelf.
I'm guessing you have Spicer 1350 series joints.
Good luck,
Grigg
