Yes I just pulled my carrier to reference as I look at his again and they are the larger 11/16 head bolts for the ring gear. I'm trying to understand the different posi units. The unit in the photos that he has does not have springs visible in the sight opening of the carrier. I should have gotten more photos of the carrier opening. I don't know if it's worth even $100 if the unit needs springs, rebuild kit, ring and pinion, install kit, etc. I see aftermarket units new for less than $400. I was going to double check to verify that his does not have a recessed ridge for c clips before I purchased it as well.