Casaleenie, As oz says..get new bolts..very special ones they are, and take note of the proper way to wire the bolts.
However, I would also recommend you bolt a plate under the diff. If you look underneath that bracket, you'll notice two machined bosses with two threaded bolt holes in each boss. One boss at each end of each bracket.
On a jag there is a plate bolted under the diff which ties both those brackets together. Tis good insurance.
JUst dont forget to drill a large hole under your
oil drain plug.