Ok so lets run this through my non mechanical brain.

Can I buy these U-bolts at the hardware store like ACE? I have about a 4 day window to get the jeep fixed.

I can still drive it a few blocks to the repair shop. Is this an easy fix for them?

Can the repair shop pop out my 4 bolts and replace them with the correct size?

I was using bolts from a dana 35 and screwing them into the 8.25 which is why they are too tight. And one broke off.