that what we all usually do here for a temp fix. just blow or drill the holes out so that the big U bolt fits in both plates, and flip them front left to right. you will see that the shock mounts line up pretty much like factory.
other way's we've dont them are to make up new plates out of 10mm steel plate, drill out the holes, and weld on some shock mounts.
the good thing about welding on shock mounts to the actual diff housing/axle tube is that the lower mount is about 3" lower than if you used the plate, and so you can run a slightly longer shock.
otherwise just cut off the upper shock mount, and make some shock hoops that will allow for some good sized shocks.