I ran into a little problem with the bolts that hold the ring gear onto the differential. Like, the first one I tried spun, but didn't come out. I have a new Auburn unit that I want to put in, and a set of 3.73's (3.42's factory). It would be easier just to install it with new bolts. Where would be the best place to look for hardware online? Everything over here is metric.

 

ARP makes replacement bolts that you can use for that application. I think that ARP-230-3001 is the correct Summit part number.